Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 5 - Section 5.1 - Introduction to Polynomials and Polynomial Functions - Exercise Set: 13

Answer

$12$

Work Step by Step

RECALL: $f(a)$ represents the value of the function $f$ when $x=a$. Thus, $f(-1)$ represents the value of the function $f$ when $x=-1$. Substitute $-1$ to $x$ in the function $f$ to obtain: $f(-1) = (-1)^2-5(-1)+6 \\f(-1)=1-(-5)+6 \\f(-1)=1+5+6 \\f(-1)=12$
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