Question

(y-2)(y+3)-(y-2)^2=5

Answer 1

(y-2)(y+3)-(y-1)²+(5-y)(y+5)=y²+3y-2y-6-(y²-2y+1)+5y+25-y² -5y=y²+y-6-y²+2y-1+25-y²=-(y²-3y-18)=(6-y)(y+3)