Answer
135
Work Step by Step
Given $x^{2}$ + 6x, x = 9
Now use the value of x =9 in the given expression
= $9^{2}$ + 6(9)
=81 + 54
=135
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 6 - Algebra: Equations and Inequalities - 6.1 Algebraic Expressions and Formulas - Exercise Set 6.1 - Page 347: 14
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