Evalute the 304 by using sutable identity
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(300+4)
using id (a+b)^2
(300)^2 + (4)^2 +2×300×4
=90000+16+2400
=92400+16=92416
using id (a+b)^2
(300)^2 + (4)^2 +2×300×4
=90000+16+2400
=92400+16=92416
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