Question

Answer any TEN of the following:
Find the square of 102 using the appropriate identity.
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Answer 1

Answer:

102^2=10404

√102=10.09950

Answer 2

Answer:

(102)²= (100+2)²

(a+b)²= a²+b²+2ab

(100+2)²=(100)²+(2)²+2(100)(2)

= 10000+4+400

= 10404

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