Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter R - Elementary Algebra Review - R.4 Polynomials - R.4 Exercise Set: 41

Answer

$-14$

Work Step by Step

Substituting $a$ with $2$ and $b$ with $-1$, the given expression, $ a^2b^3+2b^2-6a ,$ evaluates to \begin{array}{l}\require{cancel} (2)^2(-1)^3+(2)(-1)^2-6(2) \\\\= (4)(-1)+(2)(1)-6(2) \\\\= -4+2-12 \\\\= -14 .\end{array}
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