Question 175436
foil simply stands for first, outside, inside, and last
:
so you will be multiplying the first terms in each factor together then the outside terms of each term,then inside terms of each and lastly the last terms of each factor
:
</pre><font size=4 color=green><b>
:
<pre>

so
8) (7-2y)(10-3y)  first terms are 7(10)=70
                outside terms are 7(-3y)=-21y
                 inside terms are -2y(10)=-20y
                   last terms are -2y(-3y)={{{6y^2}}}

</pre>

:
bring it all together by combining all like terms {{{highlight(6y^2-41y+70)}}}
: 
I will let you do the other problem