## Intermediate Algebra (12th Edition)

$-12k^3-42k$
Using $a(b+c)=ab+ac$ or the Distributive Property, the product of the given expression, $-6k(2k^2+7) ,$ is \begin{array}{l}\require{cancel} -6k(2k^2)-6k(7) \\\\= -12k^3-42k .\end{array}