Answer
$x=-3,5$
Work Step by Step
Given: $x^2-2x-15=0$
Need to use factorization to solve the quadratic equation.
This can be factorized as follows:
$x^2+3x-5x-15=0$
or, $(x+3)(x-5)=0$
Now $x+3=0$ and $x-5=0$
Roots are $x=-3,5$
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: 2
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
