Answer
$ x^{2}-2x-15=0$
Work Step by Step
$ x+3=0 \quad $ has the solution set $\{-3\}$
$(x-5)(x+3)=0\quad $ has the solution set $\{-3,5\}$
Distribute the LHS and simplify
$ x^{2}-2x-15=0$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Section P.7 - Equations - Exercise Set - Page 109: 168
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