Answer
$44$
Work Step by Step
Start with expression: $x^{2}-4(x-y),x=8,y=3$.
Substitute $8$ in for $x$ and $3$ in for $y$: $8^{2}-4(8-3)$.
Simplify for answer: $64-4(5)=64-20=44$.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Section P.1 - Algebraic Expressions, Mathematical Models, and Real Numbers - Exercise Set - Page 17: 12
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