find the square root of 82 by identity method
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15
plz see the attachment for the answer
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Anonymous:
is it correct
Answered by
9
(100)2 - (18)2 (using a2-b2=a2+b2-2ab)
10000+324-2*100*18
=10324-200*18
=10324-3600
=6724=square of 82
10000+324-2*100*18
=10324-200*18
=10324-3600
=6724=square of 82
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