by formula evaluate 96x104
zoya0710:
(100-4)(100+4) =(100)^2-(4)^2=10000-16=9984
by using identity (a+b)(a-b)=a^2-b^3
sorry a^2-b^2
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(a-b)(a+b)=a^2-b^2
(100-4)(100+4)=100^2-4^2
=10000-16
=9984
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