12. Find (f-g)(y) if f(y)=5 y²-2y+1 and g(y)=-3y²-y-2
(f-g)(y)=2y²-3y-1
(f-g)(y)=8 y²-y+3
(f-g)(y)=8y²-3y-1
(f-g)(y)=2y²-y+3