Question 881839
FOIL Method
First :{{{ 3y(3y)=9y^2}}}
Outer :{{{3y(11)=33y}}}
Inner :{{{(-11)3y=-33y}}}
Last :{{{(-11)11=-121}}}
{{{(3y-11)(3y+11)=9y^2+33y-33y-121}}}
{{{(3y-11)(3y+11)=9y^2-121}}}