Question 859040
Use the FOIL method.
First : {{{(y)(y)=y^2}}}
Outer : {{{(y)(-4)=-4y}}}
Inner :{{{(-3)(y)=-3y}}}
Last :{{{(-3)(-4)=12}}}
{{{(y-3)(y-4)=y^2-4y-3y+12}}}
{{{highlight((y-3)(y-4)=y^2-7y+12)}}}