Answer
$70-41y+6y^2$
Work Step by Step
Using $(a+b)(c+d)=ab+ad+bc+bd$ or the FOIL Method, the product of the given expression, $
(7-2y)(10-3y)
,$ is
\begin{array}{l}\require{cancel}
7(10)+7(-3y)-2y(10)-2y(-3y)
\\\\=
70-21y-20y+6y^2
\\\\=
70-41y+6y^2
.\end{array}