Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.5 - Factoring Polynomials - Exercise Set - Page 68: 12



Work Step by Step

Regroup to obtain $(x^3-3x^2)+(4x-12)$. Factor out $x^2$ in the first group and $4$ in the second: $x^2(x-3)+4(x-3)$. Factor out $(x-3)$ to obtain $(x-3)(x^2+4)$.
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