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: 96



Work Step by Step

Start with given expression: $14x^{2}+5-[7(x^{2}-2)+4]$. Distribute $7$ through terms in inner parentheses: $14x^{2}+5-[7x^{2}-14+4]$. Distribute $-1$ through brackets: $14x^{2}+5-7x^{2}+14-4$. Combine like terms and simplify: $7x^{2}+15$.
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