Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 2 - Linear and Quadratic Functions - Section 2.3 Quadratic Functions and Their Zeros - 2.3 Assess Your Understanding - Page 146: 22


the zeros are $x=6$ or $x=-2$ and the $x$-intercepts are $(6,0)$ and $(-2,0)$.

Work Step by Step

By factorization, we have $$ g(x)=x(x-4)-12=x^2-4x-12=(x-6)(x+2) .$$ That is, we have $x-6=0 $ or $x+2=0$. So the zeros are $x=6$ or $x=-2$ and the $x$-intercepts are $(6,0)$ and $(-2,0)$.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.