Chapter 5 - Section 5.3 - Special Products - Exercise Set - Page 367: 15

$30-28y+6y^2$

Using $(a+b)(c+d)=ab+ad+bc+bd$ or the FOIL Method, the product of the given expression, $ (5-3y)(6-2y) ,$ is \begin{array}{l}\require{cancel} 5(6)+5(-2y)-3y(6)-3y(-2y) \\\\= 30-10y-18y+6y^2 \\\\= 30-28y+6y^2 .\end{array}