Question

Simply 107*93 by expressing these as a difference of two squares

Answer 1

We know
107=100+7
93=100-7

we also know ,
(a+b)(a-b)=a^2 - b^2

so 107 x 93 =(100+7)×(100-7)
=100^2 - 7^2
=10000-49 =9951

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