Question

8xy-4y и в квадрате ( без скобок )

Answer 1

$(8xy-4y)^{2}=64x^{2}y^{2}-64xy^{2}+16y^{2}$

Answer 2

1) $8xy-4y^2=4y(2x-y)$

2) $(8xy-4y)^2=64x^2y^2-64xy^2+16y^2$