Answer
$(x+5)(x^{2}+3)$
Work Step by Step
Factor in pairs,
$x^{3}+5x^{2}+3x+15= (x^{3}+5x^{2})+(3x+15)=$
$=x^{2}(x+5)+3(x+5)$
$=x^{2}(x+5)+3(x+5)$
= $(x+5)(x^{2}+3)$
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 - Mid-Chapter Check Point - Page 71: 30
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