Question
287 x 287 + 269 x 269 - 2 x 287 x 269 = ?
Answer: Option D
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Given Exp. = `a^2 +b^2` - 2ab, where a= 287, and b = 269
= `(a - b)^2` = `(287 - 269)^2`= `(18)^2` = 324
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