287 x 287 + 269 x 269 - 2 x 287 x 269 = ?

1.	287 x 287 + 269 x 269 - 2 x 287 x 269 = ?
Answer» Given Exp. = a2 + b2 - 2ab, where a = 287 and b = 269 = (a - b)2 = (287 - 269)2 = (182) = 324

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