Question 9 (2 points) b. Does your answer in part a match Eric's evaluation of the simplified expression when x = 0? If so, what does this tell you about Eric's simplified expression? If not, what mistake did Eric make in his simplification process? BIUN Paragraph Lato Recom 19p... T هی Add a File Record Video Question 10 (2 points) c. Simplify the original expression completely. Show all of your steps. Paragraph B I UM Lato |Recom...❘19px... Add a File Record Video Ea </ Previous Page Next Page Page 8 of 20 3x²-27 Eric was asked to evaluate ²+7+12 x²-4x+3 ÷ when x 0, x = -5, and x = 2. To avoid having to evaluate four quadratic polynomials multiple times, Eric decided to simplify the expression before evaluating it for the first value of x. His work is shown below in blue. 3x-27 X-4213 3x²-27 = х+7х на x²+7x112 x²-4x+3 3(x²-4) (x+4x(x+1) (x+4)(x+3) (-1)(x+4) =3(x+3)(x-3)(x+4)(x+1) (x+4)(x+3)(x-x+4) =3(x-3)(x+1) (x+4)(x-1) Now substitute O for x in the simplified expression 3(x-3)XXN) (x+4)(x-1) 360-50+1) 3(-3x1)- - (0++)(0-1) Question 8 (2 points) Listen ་ 4(-D a. Evaluate the original expression for x = 0. Be sure to show all of your steps. Paragraph B I U~ A Lato Recom 19p... T Add a Fe Record Video 4 هی 20
Question 9 (2 points) b. Does your answer in part a match Eric's evaluation of the simplified expression when x = 0? If so, what does this tell you about Eric's simplified expression? If not, what mistake did Eric make in his simplification process? BIUN Paragraph Lato Recom 19p... T هی Add a File Record Video Question 10 (2 points) c. Simplify the original expression completely. Show all of your steps. Paragraph B I UM Lato |Recom...❘19px... Add a File Record Video Ea </ Previous Page Next Page Page 8 of 20 3x²-27 Eric was asked to evaluate ²+7+12 x²-4x+3 ÷ when x 0, x = -5, and x = 2. To avoid having to evaluate four quadratic polynomials multiple times, Eric decided to simplify the expression before evaluating it for the first value of x. His work is shown below in blue. 3x-27 X-4213 3x²-27 = х+7х на x²+7x112 x²-4x+3 3(x²-4) (x+4x(x+1) (x+4)(x+3) (-1)(x+4) =3(x+3)(x-3)(x+4)(x+1) (x+4)(x+3)(x-x+4) =3(x-3)(x+1) (x+4)(x-1) Now substitute O for x in the simplified expression 3(x-3)XXN) (x+4)(x-1) 360-50+1) 3(-3x1)- - (0++)(0-1) Question 8 (2 points) Listen ་ 4(-D a. Evaluate the original expression for x = 0. Be sure to show all of your steps. Paragraph B I U~ A Lato Recom 19p... T Add a Fe Record Video 4 هی 20
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
Related questions
Question

Transcribed Image Text:Question 9 (2 points)
b. Does your answer in part a match Eric's evaluation of the simplified expression
when x = 0? If so, what does this tell you about Eric's simplified expression? If not,
what mistake did Eric make in his simplification process?
BIUN
Paragraph
Lato Recom
19p...
T
</
هی
Add a File
Record Video
Question 10 (2 points)
c. Simplify the original expression completely. Show all of your steps.
Paragraph
B I UM
Lato |Recom...❘19px...
Add a File
Record Video
Ea
</
Previous Page
Next Page
Page 8 of 20

Transcribed Image Text:3x²-27
Eric was asked to evaluate ²+7+12
x²-4x+3
÷
when x 0, x = -5, and x
= 2. To avoid having to evaluate four quadratic polynomials multiple times, Eric
decided to simplify the expression before evaluating it for the first value of x. His
work is shown below in blue.
3x-27
X-4213
3x²-27
=
х+7х на
x²+7x112
x²-4x+3
3(x²-4)
(x+4x(x+1)
(x+4)(x+3) (-1)(x+4)
=3(x+3)(x-3)(x+4)(x+1)
(x+4)(x+3)(x-x+4)
=3(x-3)(x+1)
(x+4)(x-1)
Now substitute O for x in the simplified
expression 3(x-3)XXN)
(x+4)(x-1)
360-50+1) 3(-3x1)- -
(0++)(0-1)
Question 8 (2 points)
Listen
་
4(-D
a. Evaluate the original expression for x = 0. Be sure to show all of your steps.
Paragraph
B
I U~
A
Lato Recom
19p...
T
Add a Fe
Record Video
4
هی
20
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