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
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: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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