(a b)2

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Amrita Singh
March 10, 2017, 2:14 p.m.

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Davneet Singh
March 10, 2017, 2:26 p.m.

Hi Amrita,

(a + b)2 = a2 + b2 + 2ab

(a - b)2 = a2 + b2 - 2ab

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