287 x 287 + 269 x 269

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

Answer: Option D

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

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