## Introductory Algebra for College Students (7th Edition)

$8x^5+40x^3+3x^2+15$
Using $(a+b)(c+d)=ab+ad+bc+bd$ or the FOIL Method, the product of the given expression, $(8x^3+3)(x^2+5) ,$ is \begin{array}{l}\require{cancel} 8x^3(x^2)+8x^3(5)+3(x^2)+3(5) \\\\= 8x^5+40x^3+3x^2+15 .\end{array}