(2x+3y)^2 = 4x^2 + 12xy + 9y^2
(4x-y)^2 = 16x^2 - 8xy + y^2
81^2 = 6561
59^2 = 3481
(x+6)^2 = x^2 + 12x + 36
2 8х-2у
3
4
5 2х+12
(2x+3y)^2 = 4x^2 + 12xy + 9y^2
(4x-y)^2 = 16x^2 - 8xy + y^2
81^2 = 6561
59^2 = 3481
(x+6)^2 = x^2 + 12x + 36