(xy)2-(x2-y2) ssssssssssssss

Question

(x+y)^2-(x^2-y^2) ssssssssssssss

dananhnhu2k4 · Answer

(x+y)&sup2; - (x&sup2;-y&sup2;) = (x+y).(x+y) - (x-y).(x+y)                         =(x+y).[(x+y) - (x-y)]                         =(x+y).(x+y-x+y)                         =2y.(x+y)

thanhbinh2k5 · Answer

(x+y)^2-(x^2-y^2)   =(x+y).(x+y)-(x+y).(x-y)   =(x+y).(x+y-x+y)   =2y.(x+y)

(x+y)^2-(x^2-y^2) ssssssssssssss

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