Simplify the following using the formula: `(a-b)(a+b)=a^2-b^2:`
(i)`113 xx 87`
(ii) `95 xx 105`

Explanation

Given:

`=> 113 xx\ 87`

`=> (100+13) xx(100-13)`

`=> (100)^2-(13)^2`

`=> (10000)-(169)`

`=> (9831)`


(ii) `95 xx 105`

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