(x+y)*(x-y)-(x+y)*(x+y)write in simple form
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Answer:
(x+y) ( x-y) = x2-y2 (identities)
(x+y)(x+y)= (x+y)2 = x2+ y2+ 2xy
x2-y2-x2-y2-2xy
-2y2-2xy
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