Answer
$12$
Work Step by Step
Start with given expression: $x^{2}-7x+4,x=8$.
Substitute $8$ in for $x$: $8^{2}-7(8)+4$.
Simplify for answer: $64-56+4=12$.
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: 8
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