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Evaluate using the identity (a + b)2 = a2 + 2ab + b2(41)2 |
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Answer» 412 = (40 + 1)2 (a + b)2 = a2 + 2ab + b2 Here a = 40, b = 1 (40 + 1)2 = 402 + 2 × 40 × 1 + (1)2 = 1600 + 80 + 1 412 = 1681 |
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