Simplify (f) part by rationalizing the denominator
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simply u can rationalize pairing the numbers ... here 2,3,7 are numbes .. 2 and 3 should be with together because these are small numbers ...small numbers ka additions , subtraction , multiplication simple hota hai ...isiliye 7 ko akela rakha ..jisse uska square ho jaye and hame solve karna easy ho jaye.
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