Question

(y-4)*(y+2)-(y-2)²упростите выржение

Answer 1

$(y-4)*(y+2)-(y-2)^{2} \\y^{2} +2y-4y-8-(y^{2} -4y+4) \\y^{2} +2y-4y-8-y^{2} +4y-4 \\2y-12$

Answer 2

(y-4)*(y+2)-(y-2)²=y²-4y+2y-8-(y²-4y+4)=y²-2y-8-y²+4y-4=2y-12