1. using suitable identities, find the square: (a). (93)^2.
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shubham3328:
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(93)^2
=( 100 - 7 )^2
=> (a-b)^2 = (a)^2 + (b)^2 - 2 (ab)
= (100)^2 + (7)^2 - 2 (100) (7)
= 10000 + 49 - 1400
= 8649
hope it helps...
=( 100 - 7 )^2
=> (a-b)^2 = (a)^2 + (b)^2 - 2 (ab)
= (100)^2 + (7)^2 - 2 (100) (7)
= 10000 + 49 - 1400
= 8649
hope it helps...
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