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287 X 287 + 269 X 269-2 X 287 X 269 = ? - Mathematics

MCQ

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

Options

  • 534

  • 446

  • 354

  • 324

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Solution

324
Explanation:
Using a2 + b2 - 2ab = (a - b)2
where, a = 287 and b = 269
∴ Given expression = (287 - 269)2 = (18)2 = 324

Concept: Simplification
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