## College Algebra (11th Edition)

$16y^2+42y-49$
Using the $(a+b)(c+d)=ac+ad+bc+bd$ or the FOIL Method and the laws of exponents, the given expression, $(8y-7)(2y+7) ,$ simplifies to \begin{array}{l}\require{cancel} 8y(2y)+8y(7)-7(2y)-7(7) \\\\= 16y^2+56y-14y-49 \\\\= 16y^2+42y-49 .\end{array}