Answer
$-1 \leq x \leq3$
Work Step by Step
Given $3x^2 -6x-2 \leq 7$. Rewrite as: $3x^2-6x -9 \leq 0$. Then make a table of values:
Notice that $3x^2-6x -9 \leq 0$ when $-1 \leq x \leq3$.
The solution of the inequality is $-1 \leq x \leq3$.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 4 Quadratic Functions and Factoring - 4.9 Graph and Solve Quadratic Inequalities - 4.9 Exercises - Skill Practice - Page 304: 33
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