Answer
22
Work Step by Step
Given $x^{2}$ - 3(x-y), x=2, y=8
Now use the value of x=2 and y=8 in the given expression.
= $2^{2}$ - 3(2-8)
=4-3(-6)
=4+18
=22
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: 23
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