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प्रश्न
(a + b)2 – 2ab = ______ + ______.
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उत्तर
(a + b)2 – 2ab = a2 + b2.
Explanation:
We have,
(a + b)2 – 2ab = a2 + b2 + 2ab – 2ab ...[∵ (a + b)2 = a2 + b2 + 2ab]
= a2 + b2
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