College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter R - Section R.5 - Factoring Polynomials - R.5 Exercises - Page 58: 114



Work Step by Step

We factor: $4-14x^{2}-8x^{4}$ First we factor out $-2$: $-2(4x^{4}+7x^{2}-2)$ Next we factor in two parts: $-2(4x^{2}-1)(x^{2}+2)$ Next we use the fact that $(a-b)(a+b)=a^2-b^2$: $-2(2x-1)(2x+1)(x^{2}+2)$
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