Заполните пропуски (2x+...)²=...+...+y² (3y-...)²=...-24y+... (...+2m)²=4n+...+......

Question

Заполните пропуски
(2x+...)²=...+...+y²
(3y-...)²=...-24y+...
(...+2m)²=4n+...+...
(...-...)²=a²-...+9

Answer 1

(2x+y)²=4x²+4xy+y²
(3y-4)²=9y2-24y+16
(2n+2m)²=4n+8nm+4m²
(a-3)²=a²+6a+9