Answer
$x=7$ or $x=-2$
Work Step by Step
We solve by factoring:
$(2-x)^{2}+(2-x)-20=0$
$[(2-x)+5][(2-x)-4]=0$
$(7-x)(-2-x)=0$
$7-x=0$ or $-2-x=0$
$x=7$ or $x=-2$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter 1 - Section 1.4 - Radical Equations; Equations Quadratic in Form; Factorable Equations - 1.4 Assess Your Understanding - Page 118: 52
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