## Precalculus (6th Edition) Blitzer

Published by Pearson

# Chapter P - Mid-Chapter Check Point - Page 71: 30

#### Answer

$(x+5)(x^{2}+3)$

#### Work Step by Step

Factor in pairs, $x^{3}+5x^{2}+3x+15= (x^{3}+5x^{2})+(3x+15)=$ $=x^{2}(x+5)+3(x+5)$ $=x^{2}(x+5)+3(x+5)$ = $(x+5)(x^{2}+3)$

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