Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 6 - Review: 91

Answer

The solutions are -7 and -4 and 0.

Work Step by Step

2x(x+7)(x+4)=0 x=0 or x+7=0 or x+4=0 x=0 or x=-7 or x=-4 The solutions are -7 and -4 and 0. Check Let x=-7 2x(x+7)(x+4)=0 2(-7)(-7+7)(-7+4)=0 -14*0*(-3)=0 0=0 Let x=-4 2x(x+7)(x+4)=0 2(-4)(-4+7)(-4+4)=0 -8*3*0=0 0=0 Let x=0 2x(x+7)(x+4)=0 2(0)(0+7)(0+4)=0 0=0
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