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Question
287 x 287 + 269 x 269-2 x 287 x 269 = ?
Options
534
446
354
324
MCQ
Solution
324
Explanation:
Using a2 + b2 - 2ab = (a - b)2
where, a = 287 and b = 269
∴ Given expression = (287 - 269)2 = (18)2 = 324
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Simplification (Entrance Exam)
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