Answer
$3(n-5)(n+6)$
Work Step by Step
Using the rules of factoring trinomials to factor the polynomial, we obtain:
$3n^{2}+3n-90$
=$3(n^{2}+n-30)$
=$3(n^{2}-5n+6n-30)$
=$3[n(n-5)+6(n-5)]$
=$3(n-5)(n+6)$
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 6 - Factoring, Solving Equations, and Problem Solving - Chapter 6 Review Problem Set - Page 273: 13
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