a) (4+a)2 = 16 + 8a + (a)2
б) (2x-1)2 = (4x)2 - 4x + 1
в) (2a+3b)2 = (4a)2 + 12ab + (9b)2
г) (x3 - 3)2 = (x)6 - (6x)3 + 9
(4+a)2 = 16 +8a + a2
(2x - 1)2 = 4x2 - 4x +1
(2a+3b)2 =4a2 + 12ab + 9b2
(x3-3)2 = x6 - 6x3+9
Объяснение:
(x-y)2=x2-2xy+y2
(x+y)2=x2+2xy+y2
