How do i solve (x+2)^2 with given identity? my teacher wants me to show how to solve it using multiplication and given i know how to solve it with foil and i get the answer and show it like this foil: (x+2)^2 (x+2)(x+2) x^2+2x+2x+4 x^2+4x+4 but given identity i don't know pls i've been trying to figure it out for hours