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Question

The value of (52)2 is:

A
2704
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B
2684
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C
3704
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D
2564
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Solution

The correct option is A 2704
(52)2 can be written as (50 + 2)2.
Using the identity, (a+b)2 = (a)2+2ab+(b)2,
(50 + 2)2 = (50)2+2(2)(50)+(2)2 = 2704.

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