Answers

2014-07-25T13:11:27+08:00
(×-y)²
= ×.× = ײ
=-y.-y = y²
= x²+y² ans.
1 2 1
(2×+y)^2
2×.2× = 4×^2 y.y = y^2 = 4×^2+y^2 ans.
hndi ko getts han eh ano yan cube of binomial i sorr talaga ahhhhh