Answer
$x=-7,1$
Work Step by Step
Given: $x^2+6x=7$ or, $x^2+6x-7=0$
Need to use factorization to solve the quadratic equation.
This can be factorized as follows:
$x^2-x+7x-7=0$
or, $(x+7)(x-1)=0$
Now $x+7=0$ and $x-1=0$
Roots are $x=-7,1$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 5 - Section 5.7 - Polynomial Equations and Their Applications - Exercise Set - Page 390: 3
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