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

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