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

$20m^3-15m^5$
Using $a(b+c)=ab+ac$ or the Distributive Property, the given expression, $5m^3(4-3m^2)$, is equivalent to \begin{array}{l}\require{cancel} 5m^3(4)-5m^3(3m^2) \\\\= 20m^3-15m^5 .\end{array}