Question

Using identity of square solve 102^2​

Answer 1

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Answer 2

Step-by-step explanation:

$(102)^{2}$                  

= $(100+2)^{2}$                    [Using identity $(a+b)^{2}$ = $a^{2} + 2ab + b^{2}$]

= $100^{2}$ + 2 × 100 × 2 + $2^{2}$

= 10000 + 400 + 4

= 10404 (Ans)