## Intermediate Algebra (6th Edition)

$9x^2+36x+35$
Using $(a+b)(c+d)=ac+ad+bc+bd$ or the FOIL Method, the given expression, $(3x+5)(3x+7)$, is equivalent to \begin{array}{l}\require{cancel} 9x^2+21x+15x+35 \\\\= 9x^2+36x+35 .\end{array}