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Question

Using suitable identities, evaluate the following:

(103)2

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Solution

Given (103)2=(100+3)2
As we know that (a+b)2=a2+2ab+b2
Substitute a=100 and b=3, we get
(100+3)2=(100)2+2×100×3+32
=10000+600+9
(103)2=10609


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