Question

Заполните Пропуски
А) (2x+...)²=...+...+y²
B) (3y-...)²=...-24y+...
V) (...+2m)²=4n²+...+...

Answer 1

$(2x+y)^2=4x^2+4xy+y^2\(3y-4)^2=9y^2-24y+16\(2n+2m)^2=4n^2+8nm+4m^2$