## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$14n^{5}-7n^3$
Using $a(b+c)=ab+ac$ or the Distributive Property, the given expression, $7n^3(2n^2-1)$, is equivalent to \begin{array}{l}\require{cancel} 7n^3(2n^2)-7n^3(1) \\\\= 14n^{5}-7n^3 .\end{array}