Question

rationalise the denominator 7÷√5-√3​

Answer 1

after rationalizing denominator the eq will be

$7\sqrt{5} - \sqrt{3}$

Answer 2

ǟռֆաɛʀ :

Given :

7/√5-√3

Here we will multiply the denominator by √5+√3

That is ;

7/√5-√3 * √5+√3/√5+√3

√35-√21/ (√5-√3)(√5+√3)

√35-√21/ (√5)² - (√3)²

√35-√21/ √25-√9

√35-√21/ 5 - 3

√35-√21/ 2

therefore is the answer √35-√21/ 2