Precalculus (6th Edition) Blitzer

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 18: 95



Work Step by Step

Start with given expression: $18x^{2}+4-[6(x^{2}-2)+5]$. Distribute $6$ through terms in inner parentheses: $18x^{2}+4-[6x^{2}-12+5]$. Distribute $-1$ through brackets: $18x^{2}+4-6x^{2}+12-5$. Combine like terms and simplify: $12x^{2}+11$.
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