Graphical Approach To College Algebra
7th Edition
ISBN: 9780134696522
Author: HORNSBY, John, Lial, Margaret L., Rockswold, Gary K.
Publisher: Pearson Education, Inc.,
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 4.4, Problem 61E
To determine
To find: The 4 complex solutions of the given equation.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Solve by the quadratic formula or completing the square to obtain exact solutions.
2
e
104
OA) -16±3√6
B) 8±√10
O c) -8±√10
OD) 8±3√√6
U
Question 14 (1 point)
Listen
The frame on a picture is 18 in by 22 in outside and is of uniform width. Using
algebraic methods, what is the width of the frame if the inner area of the picture
shown is 250 in²2? Write answer to 2 decimal places. (Write the number with no
units).
18 in
Your Answer:
22 in
◄ Listen
A vacant lot is being converted into a community garden. The garden and a walkway
around its perimeter have an area of 560 square feet. Find the width of the walkway
(x) if the garden measures 15 feet wide by 19 feet long. Write answer to 2 decimal
places. (Write the number without units).
X
15 feet
Your Answer:
19 feet
X
Chapter 4 Solutions
Graphical Approach To College Algebra
Ch. 4.1 - CONCEPT CHECK Use the polynomial function graphs,...Ch. 4.1 - CONCEPT CHECK Use the polynomial function graphs,...Ch. 4.1 - CONCEPT CHECK Use the polynomial function graphs,...Ch. 4.1 - CONCEPT CHECK Use the polynomial function graphs,...Ch. 4.1 - CONCEPT CHECK Use the polynomial function graphs,...Ch. 4.1 - CONCEPT CHECK Use the polynomial function graphs,...Ch. 4.1 - CONCEPT CHECK Use the polynomial function graphs,...Ch. 4.1 - CONCEPT CHECK Use the polynomial function graphs,...Ch. 4.1 - Use an end behavior diagram , , , or to describe...Ch. 4.1 - Use an end behavior diagram , , , or to describe...
Ch. 4.1 - Use an end behavior diagram , , , or to describe...Ch. 4.1 - Use an end behavior diagram , , , or to describe...Ch. 4.1 - Use an end behavior diagram , , , or to describe...Ch. 4.1 - Use an end behavior diagram , , , or to describe...Ch. 4.1 - Use an end behavior diagram , , , or to describe...Ch. 4.1 - Use an end behavior diagram , , , or to describe...Ch. 4.1 - Use an end behavior diagram , , , or to describe...Ch. 4.1 - Use an end behavior diagram , , , or to describe...Ch. 4.1 - Use an end behavior diagram , , , or to describe...Ch. 4.1 - Prob. 20ECh. 4.1 - Prob. 21ECh. 4.1 - Prob. 22ECh. 4.1 - Prob. 23ECh. 4.1 - Prob. 24ECh. 4.1 - Prob. 25ECh. 4.1 - Prob. 26ECh. 4.1 - Prob. 27ECh. 4.1 - Prob. 28ECh. 4.1 - Prob. 29ECh. 4.1 - Prob. 30ECh. 4.1 - Prob. 31ECh. 4.1 - Prob. 32ECh. 4.1 - Without using a calculator, match each function in...Ch. 4.1 - Prob. 34ECh. 4.1 - Without using a calculator, match each function in...Ch. 4.1 - Prob. 36ECh. 4.1 - Prob. 37ECh. 4.1 - Prob. 38ECh. 4.1 - Prob. 39ECh. 4.1 - Prob. 40ECh. 4.1 - Prob. 41ECh. 4.1 - Prob. 42ECh. 4.1 - Prob. 43ECh. 4.1 - Prob. 44ECh. 4.1 - CONCEPT CHECK The graphs below show
but not...Ch. 4.1 - Prob. 46ECh. 4.1 - CONCEPT CHECK The graphs below show
y = x3 − 3x2 −...Ch. 4.1 - Prob. 48ECh. 4.1 - CONCEPT CHECK The graphs below show
but not...Ch. 4.1 - Prob. 50ECh. 4.1 - CONCEPT CHECK The graphs below show
y = x3 − 3x2 −...Ch. 4.1 - Prob. 52ECh. 4.1 - CONCEPT CHECK The graphs below show
y = x3 − 3x2 −...Ch. 4.1 - Prob. 54ECh. 4.1 - Prob. 55ECh. 4.1 - Prob. 56ECh. 4.1 - Prob. 57ECh. 4.1 - Prob. 58ECh. 4.1 - Prob. 59ECh. 4.1 - Prob. 60ECh. 4.1 - Prob. 61ECh. 4.1 - Prob. 62ECh. 4.1 - Prob. 63ECh. 4.1 - Prob. 64ECh. 4.1 - Prob. 65ECh. 4.1 - Prob. 66ECh. 4.1 - Prob. 67ECh. 4.1 - Prob. 68ECh. 4.1 - Prob. 69ECh. 4.1 - Prob. 70ECh. 4.1 - Prob. 71ECh. 4.1 - Prob. 72ECh. 4.1 - Prob. 73ECh. 4.1 - Prob. 74ECh. 4.2 - CHECKING ANALYTIC SKILLS Simplify each rational...Ch. 4.2 - CHECKING ANALYTIC SKILLS Simplify each rational...Ch. 4.2 - Prob. 3ECh. 4.2 - Prob. 4ECh. 4.2 - CHECKING ANALYTIC SKILLS Simplify each rational...Ch. 4.2 - Prob. 6ECh. 4.2 - Prob. 7ECh. 4.2 - Prob. 8ECh. 4.2 - Use the intermediate value theorem to show that...Ch. 4.2 - Prob. 10ECh. 4.2 - Prob. 11ECh. 4.2 - Prob. 12ECh. 4.2 - Use the intermediate value theorem to show that...Ch. 4.2 - Prob. 14ECh. 4.2 - Prob. 15ECh. 4.2 - Prob. 16ECh. 4.2 - Use the intermediate value theorem to show that...Ch. 4.2 - Prob. 18ECh. 4.2 - CONCEPT CHECK Suppose that a polynomial function P...Ch. 4.2 - Prob. 20ECh. 4.2 - Find each quotient when P(x) is divided by the...Ch. 4.2 - Prob. 22ECh. 4.2 - Prob. 23ECh. 4.2 - Prob. 24ECh. 4.2 - Find each quotient when P(x) is divided by the...Ch. 4.2 - Prob. 26ECh. 4.2 - Prob. 27ECh. 4.2 - Prob. 28ECh. 4.2 - Find each quotient when P(x) is divided by the...Ch. 4.2 - Prob. 30ECh. 4.2 - Prob. 31ECh. 4.2 - Prob. 32ECh. 4.2 - Use synthetic substitution to find P(k).
k = 3;...Ch. 4.2 - Prob. 34ECh. 4.2 - Prob. 35ECh. 4.2 - Prob. 36ECh. 4.2 - Use synthetic substitution to find P(k).
k = 2;...Ch. 4.2 - Prob. 38ECh. 4.2 - Prob. 39ECh. 4.2 - Prob. 40ECh. 4.2 - Use synthetic substitution to find P(k).
; P(x) =...Ch. 4.2 - Prob. 42ECh. 4.2 - Prob. 43ECh. 4.2 - Prob. 44ECh. 4.2 - Use synthetic substitution to determine whether...Ch. 4.2 - Prob. 46ECh. 4.2 - Prob. 47ECh. 4.2 - Prob. 48ECh. 4.2 - Use synthetic substitution to determine whether...Ch. 4.2 - Prob. 50ECh. 4.2 - Prob. 51ECh. 4.2 - Prob. 52ECh. 4.2 - Use synthetic substitution to determine whether...Ch. 4.2 - Prob. 54ECh. 4.2 - Prob. 55ECh. 4.2 - Prob. 56ECh. 4.2 - Prob. 57ECh. 4.2 - Prob. 58ECh. 4.2 - Prob. 59ECh. 4.2 - Prob. 60ECh. 4.2 - For each polynomial at least one zero is given....Ch. 4.2 - Prob. 62ECh. 4.2 - For each polynomial at least one zero is given....Ch. 4.2 - Prob. 64ECh. 4.2 - For each polynomial at least one zero is given....Ch. 4.2 - For each polynomial at least one zero is given....Ch. 4.2 - Prob. 67ECh. 4.2 - Prob. 68ECh. 4.2 - For each polynomial at least one zero is given....Ch. 4.2 - Prob. 70ECh. 4.2 - Prob. 71ECh. 4.2 - Prob. 72ECh. 4.2 - Factor P(x) into linear factors given that k is a...Ch. 4.2 - Prob. 74ECh. 4.2 - Prob. 75ECh. 4.2 - Prob. 76ECh. 4.2 - Factor P(x) into linear factors given that k is a...Ch. 4.2 - Prob. 78ECh. 4.2 - Prob. 79ECh. 4.2 - Prob. 80ECh. 4.2 - Divide.
Ch. 4.2 - Prob. 82ECh. 4.2 - Divide.
Ch. 4.2 - Prob. 84ECh. 4.2 - Divide.
Ch. 4.2 - Prob. 86ECh. 4.2 - Prob. 87ECh. 4.2 - Prob. 88ECh. 4.2 - Prob. 89ECh. 4.2 - Prob. 90ECh. 4.2 - Prob. 91ECh. 4.2 - Prob. 92ECh. 4.2 - Prob. 1RBCCh. 4.2 - Prob. 2RBCCh. 4.2 - Prob. 3RBCCh. 4.2 - Prob. 4RBCCh. 4.2 - Prob. 5RBCCh. 4.2 - Prob. 6RBCCh. 4.2 - Prob. 7RBCCh. 4.2 - Prob. 8RBCCh. 4.2 - Prob. 9RBCCh. 4.2 - Prob. 10RBCCh. 4.3 - CHECKING ANALYTIC SKILLS Find a cubic polynomial...Ch. 4.3 - Prob. 2ECh. 4.3 - CHECKING ANALYTIC SKILLS Find a cubic polynomial...Ch. 4.3 - Prob. 4ECh. 4.3 - CHECKING ANALYTIC SKILLS Find a cubic polynomial...Ch. 4.3 - CHECKING ANALYTIC SKILLS Find a cubic polynomial...Ch. 4.3 - CHECKING ANALYTIC SKILLS Find a polynomial...Ch. 4.3 - Prob. 8ECh. 4.3 - CHECKING ANALYTIC SKILLS Find a polynomial...Ch. 4.3 - Prob. 10ECh. 4.3 - CHECKING ANALYTIC SKILLS Find a polynomial...Ch. 4.3 - Prob. 12ECh. 4.3 - One or more zeros are given for each polynomial....Ch. 4.3 - Prob. 14ECh. 4.3 - One or more zeros are given for each polynomial....Ch. 4.3 - Prob. 16ECh. 4.3 - One or more zeros are given for each polynomial....Ch. 4.3 - Prob. 18ECh. 4.3 - Find a polynomial function P(x) having leading...Ch. 4.3 - Prob. 20ECh. 4.3 - Find a polynomial function P(x) having leading...Ch. 4.3 - Prob. 22ECh. 4.3 - Find a polynomial function P(x) having leading...Ch. 4.3 - Prob. 24ECh. 4.3 - Prob. 25ECh. 4.3 - Prob. 26ECh. 4.3 - Find a polynomial function P(x) having leading...Ch. 4.3 - Prob. 28ECh. 4.3 - Prob. 29ECh. 4.3 - Prob. 30ECh. 4.3 - Sketch by hand the graph of each function. (You...Ch. 4.3 - Prob. 32ECh. 4.3 - Sketch by hand the graph of each function. (You...Ch. 4.3 - Prob. 34ECh. 4.3 - Sketch by hand the graph of each function. (You...Ch. 4.3 - Prob. 36ECh. 4.3 - Sketch by hand the graph of each function. (You...Ch. 4.3 - Prob. 38ECh. 4.3 - Prob. 39ECh. 4.3 - Prob. 40ECh. 4.3 - CONCEPT CHECK Use the graphs in Exercises 41–46 to...Ch. 4.3 - CONCEPT CHECK Use the graphs in Exercises 41–46 to...Ch. 4.3 - CONCEPT CHECK Use the graphs in Exercises 41–46 to...Ch. 4.3 - Prob. 44ECh. 4.3 - CONCEPT CHECK Use the graphs in Exercises 41–46 to...Ch. 4.3 - Prob. 46ECh. 4.3 - Prob. 47ECh. 4.3 - Prob. 48ECh. 4.3 - Prob. 49ECh. 4.3 - Prob. 50ECh. 4.3 - Prob. 51ECh. 4.3 - Prob. 52ECh. 4.3 - For each polynomial function, (a) list all...Ch. 4.3 - Prob. 54ECh. 4.3 - For each polynomial function, (a) list all...Ch. 4.3 - Prob. 56ECh. 4.3 - For each polynomial function, (a) list all...Ch. 4.3 - Prob. 58ECh. 4.3 - Prob. 59ECh. 4.3 - Prob. 60ECh. 4.3 - Prob. 61ECh. 4.3 - Prob. 62ECh. 4.3 - Prob. 63ECh. 4.3 - Prob. 64ECh. 4.3 - Prob. 65ECh. 4.3 - Prob. 66ECh. 4.3 - Prob. 67ECh. 4.3 - Prob. 68ECh. 4.3 - Prob. 69ECh. 4.3 - Prob. 70ECh. 4.3 - Prob. 71ECh. 4.3 - Prob. 72ECh. 4.3 - Prob. 73ECh. 4.3 - Prob. 74ECh. 4.3 - Prob. 75ECh. 4.3 - Prob. 76ECh. 4.3 - Prob. 77ECh. 4.3 - Prob. 78ECh. 4.3 - Prob. 79ECh. 4.3 - Prob. 80ECh. 4.3 - Prob. 81ECh. 4.3 - Prob. 82ECh. 4.3 - Prob. 83ECh. 4.3 - Prob. 84ECh. 4.3 - Prob. 85ECh. 4.3 - Prob. 86ECh. 4.3 - Prob. 87ECh. 4.3 - Prob. 88ECh. 4.3 - Prob. 89ECh. 4.3 - Prob. 90ECh. 4.3 - Prob. 91ECh. 4.3 - Prob. 92ECh. 4.3 - RELATING CONCEPTS For individual or group...Ch. 4.3 - Prob. 94ECh. 4.3 - Prob. 95ECh. 4.3 - do the following in order.
Use Descartes’ rule of...Ch. 4.3 - Prob. 97ECh. 4.3 - Prob. 98ECh. 4.4 - Prob. 1ECh. 4.4 - Prob. 2ECh. 4.4 - Prob. 3ECh. 4.4 - Prob. 4ECh. 4.4 - Prob. 5ECh. 4.4 - Prob. 6ECh. 4.4 - Prob. 7ECh. 4.4 - Prob. 8ECh. 4.4 - CHECKING ANALYTIC SKILLS Find all real solutions....Ch. 4.4 - Prob. 10ECh. 4.4 - Prob. 11ECh. 4.4 - Prob. 12ECh. 4.4 - CHECKING ANALYTIC SKILLS Find all complex...Ch. 4.4 - Prob. 14ECh. 4.4 - Prob. 15ECh. 4.4 - Prob. 16ECh. 4.4 - CHECKING ANALYTIC SKILLS Find all complex...Ch. 4.4 - Prob. 18ECh. 4.4 - Prob. 19ECh. 4.4 - Solve each equation analytically for all complex...Ch. 4.4 - Solve each equation analytically for all complex...Ch. 4.4 - Prob. 22ECh. 4.4 - Prob. 23ECh. 4.4 - Prob. 24ECh. 4.4 - Prob. 25ECh. 4.4 - Prob. 26ECh. 4.4 - Prob. 27ECh. 4.4 - Prob. 28ECh. 4.4 - Prob. 29ECh. 4.4 - Prob. 30ECh. 4.4 - Prob. 31ECh. 4.4 - Prob. 32ECh. 4.4 - Prob. 33ECh. 4.4 - Prob. 34ECh. 4.4 - Prob. 35ECh. 4.4 - Prob. 36ECh. 4.4 - Graph each polynomial function by hand, as shown...Ch. 4.4 - Prob. 38ECh. 4.4 - Graph each polynomial function by hand, as shown...Ch. 4.4 - Prob. 40ECh. 4.4 - Graph each polynomial function by hand, as shown...Ch. 4.4 - Prob. 42ECh. 4.4 - Prob. 43ECh. 4.4 - Prob. 44ECh. 4.4 - Prob. 45ECh. 4.4 - Prob. 46ECh. 4.4 - Prob. 47ECh. 4.4 - Prob. 48ECh. 4.4 - Prob. 49ECh. 4.4 - Prob. 50ECh. 4.4 - Prob. 51ECh. 4.4 - Prob. 52ECh. 4.4 - Prob. 53ECh. 4.4 - Prob. 54ECh. 4.4 - Find all n complex solutions of each equation of...Ch. 4.4 - Prob. 56ECh. 4.4 - Prob. 57ECh. 4.4 - Prob. 58ECh. 4.4 - Find all n complex solutions of each equation of...Ch. 4.4 - Prob. 60ECh. 4.4 - Prob. 61ECh. 4.4 - Prob. 62ECh. 4.4 - Find all n complex solutions of each equation of...Ch. 4.4 - Prob. 64ECh. 4.4 - Prob. 65ECh. 4.4 - Prob. 66ECh. 4.4 - Prob. 67ECh. 4.4 - Prob. 68ECh. 4.4 - Prob. 69ECh. 4.4 - Prob. 70ECh. 4.4 - Prob. 71ECh. 4.4 - Prob. 72ECh. 4.4 - Prob. 73ECh. 4.4 - Prob. 74ECh. 4.4 - Prob. 75ECh. 4.4 - Prob. 76ECh. 4.4 - Prob. 77ECh. 4.4 - Prob. 78ECh. 4.4 - Prob. 1RBCCh. 4.4 - Prob. 2RBCCh. 4.4 - Prob. 3RBCCh. 4.4 - Prob. 4RBCCh. 4.4 - Prob. 5RBCCh. 4.4 - Prob. 6RBCCh. 4.4 - Prob. 7RBCCh. 4.4 - Prob. 8RBCCh. 4 - Prob. 1RECh. 4 - Prob. 2RECh. 4 - Prob. 3RECh. 4 - Prob. 4RECh. 4 - Prob. 5RECh. 4 - Prob. 6RECh. 4 - Prob. 7RECh. 4 - Prob. 8RECh. 4 - Prob. 9RECh. 4 - Prob. 10RECh. 4 - Prob. 11RECh. 4 - Prob. 12RECh. 4 - Prob. 13RECh. 4 - Prob. 14RECh. 4 - Prob. 15RECh. 4 - Prob. 16RECh. 4 - Prob. 17RECh. 4 - Prob. 18RECh. 4 - Prob. 19RECh. 4 - Prob. 20RECh. 4 - Prob. 21RECh. 4 - Prob. 22RECh. 4 - Prob. 23RECh. 4 - Prob. 24RECh. 4 - Prob. 25RECh. 4 - Prob. 26RECh. 4 - Prob. 27RECh. 4 - Prob. 28RECh. 4 - Give the solution set of each inequality, using...Ch. 4 - Prob. 30RECh. 4 - Prob. 31RECh. 4 - Prob. 32RECh. 4 - Prob. 33RECh. 4 - Prob. 34RECh. 4 - Prob. 35RECh. 4 - Prob. 36RECh. 4 - Prob. 37RECh. 4 - Prob. 38RECh. 4 - Prob. 39RECh. 4 - Prob. 40RECh. 4 - Prob. 41RECh. 4 - Prob. 42RECh. 4 - Prob. 43RECh. 4 - Prob. 44RECh. 4 - Prob. 45RECh. 4 - Prob. 46RECh. 4 - Prob. 47RECh. 4 - Prob. 48RECh. 4 - Prob. 49RECh. 4 - Prob. 50RECh. 4 - Prob. 51RECh. 4 - Prob. 52RECh. 4 - Prob. 53RECh. 4 - Prob. 54RECh. 4 - Prob. 55RECh. 4 - Prob. 56RECh. 4 - Prob. 1TCh. 4 - Prob. 2TCh. 4 - Consider the function
Use a calculator to give a...Ch. 4 - Prob. 4TCh. 4 - Prob. 5TCh. 4 - Prob. 6TCh. 4 - Prob. 7TCh. 4 - Prob. 8TCh. 4 - Prob. 9TCh. 4 - Prob. 10TCh. 4 - Prob. 11TCh. 4 - Prob. 12TCh. 4 - Prob. 13TCh. 4 - Prob. 14T
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, algebra and related others by exploring similar questions and additional content below.Similar questions
- Listen A stuntman jumps from a roof 440 feet from the ground. How long will it take him to reach the ground? Use the formula, distance, d = 16t2, (where t is in seconds). Write answer to 1 decimal place. (Write the number, not the units). Your Answer:arrow_forwardSolve x² - 10x + 24 = 0 ○ A) 4,6 B) -12, -2 C) 12,2 D) -4, -6arrow_forwardc7. = -(9 - x) 25 A a) -1, 11 b) 31 c) 11 d) 1, 11arrow_forward
- 2 4x² - 12x-7=0 A) 7 ON 1,-1 4 OB)-, 7 1 C) 2,2 Oa½½-½ c) 17/17, - 1/1/1 D) 2, 2 ODI-,-arrow_forwardSolve using the quadratic equation formula 4x² + 12x=-6 ○ a) -12±√√3 2 b) -3±√15 -3+√15 2 ○ c) c) -3±√√√3 2 d) -3±√3 8arrow_forwardListen Solve the quadratic equation by factoring. One solution is 0. Find the other. 2x² + 16x = 0 Your Answer: Answerarrow_forward
- Directions: Use the equation A = Pet to answer each question and be sure to show all your work. 1. If $5,000 is deposited in an account that receives 6.1% interest compounded continuously, how much money is in the account after 6 years? 2. After how many years will an account have $12,000 if $6,000 is deposited, and the account receives 3.8% interest compounded continuously? 3. Abigail wants to save $15,000 to buy a car in 7 years. If she deposits $10,000 into an account that receives 5.7% interest compounded continuously, will she have enough money in 7 years? 4. Daniel deposits $8,000 into a continuously compounding interest account. After 18 years, there is $13,006.40 in the account. What was the interest rate? 5. An account has $26,000 after 15 years. The account received 2.3% interest compounded continuously. How much was deposited initially?arrow_forwardTRIANGLES INDEPENDENT PRACTICE ription Criangle write and cow Using each picture or description of triangle write and solve an equation in ordering the number of degrees in each angle TRIANGLE EQUATION & WORK ANGLE MEASURES A B -(7x-2)° (4x) (3x)° (5x − 10) C (5x – 2) (18x) E 3. G 4. H (16x)° LL 2A= 2B= ZE=arrow_forwardAnswer ASAP and every part, please. Structures.arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
Recommended textbooks for you
- Algebra and Trigonometry (6th Edition)AlgebraISBN:9780134463216Author:Robert F. BlitzerPublisher:PEARSONContemporary Abstract AlgebraAlgebraISBN:9781305657960Author:Joseph GallianPublisher:Cengage LearningLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
- Algebra And Trigonometry (11th Edition)AlgebraISBN:9780135163078Author:Michael SullivanPublisher:PEARSONIntroduction to Linear Algebra, Fifth EditionAlgebraISBN:9780980232776Author:Gilbert StrangPublisher:Wellesley-Cambridge PressCollege Algebra (Collegiate Math)AlgebraISBN:9780077836344Author:Julie Miller, Donna GerkenPublisher:McGraw-Hill Education
Algebra and Trigonometry (6th Edition)
Algebra
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:PEARSON
Contemporary Abstract Algebra
Algebra
ISBN:9781305657960
Author:Joseph Gallian
Publisher:Cengage Learning
Linear Algebra: A Modern Introduction
Algebra
ISBN:9781285463247
Author:David Poole
Publisher:Cengage Learning
Algebra And Trigonometry (11th Edition)
Algebra
ISBN:9780135163078
Author:Michael Sullivan
Publisher:PEARSON
Introduction to Linear Algebra, Fifth Edition
Algebra
ISBN:9780980232776
Author:Gilbert Strang
Publisher:Wellesley-Cambridge Press
College Algebra (Collegiate Math)
Algebra
ISBN:9780077836344
Author:Julie Miller, Donna Gerken
Publisher:McGraw-Hill Education
10 - Roots of polynomials; Author: Technion;https://www.youtube.com/watch?v=88YUeigknNg;License: Standard YouTube License, CC-BY