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Question
Evaluate the following, using suitable identity
512
Sum
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Solution
512 = (50 + 1)2
Taking a = 50 and b = 1 we get
(a + b)2 = a2 + 2ab + b2
(50 + 1)2 = 502 + 2(50)(1) + 12
= 2500 + 100 + 1
512 = 2601
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