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: 34

Answer

$(3x-2)(5x-3)$

Work Step by Step

$15x^{2}-19x+6=$ two factors of $ac=+90$ whose sum is $b=-19$ are $-10$ and $-9.$ Rewrite the middle term and factor in pairs. $15x^{2}-19x+6=15x^{2}-10x-9x+6=$ $=5x(3x-2)-3(3x-2)$ $=(3x-2)(5x-3)$
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