Ответ:
Пошаговое объяснение:
(y+4) ^2 = y^2+8y+16
(2x-3y) ^2 = 4x^2-12xy+9y^2
(-3a+5) ^2= 9a^2+30a+25
(-x^2-2x) ^2 = x^4+4x^3+4x^2 (?)
(x-6) ^2 = x^2-12x+36
(7m+3n) ^2 = 49m^2+42mn+9n^2
(-2y+3) ^2 = -(2y-3)^2 = -(4y^2+12y+9) = -4^2-12y-9
(-x^3-4x) ^2 = -(x^3+4x)^2 = -x^6-8x^4-16x^2