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Question		Answer
(a+b)^2 start learning		a2+2ab+b2
(a-b)^2 start learning		a2-2ab+b2
(a+b)*(a-b) start learning		a2-b2
(a-b)*(a-b) start learning		a2+b2
(a+b)*(a+b) start learning		a2+b2

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