Question

Rationalise the denominator of these

Answer 1

Answer:

I dont know the answer Mark me brainiest

Answer 2

Solution :—

$1). \: \: \: \: \: \: \: \: \frac{3}{ \sqrt{7} - \sqrt{5} } \\ rationlize \: the \: denominator \\ \frac{3( \sqrt{7} + \sqrt{5}) }{( \sqrt{7} - \sqrt{5} )( \sqrt{7} + \sqrt{5} } \\ = \frac{3 \sqrt{7} + 3 \sqrt{5} }{ { (\sqrt{7} )}^{2} - {( \sqrt{5} )}^{2} } \\ = \frac{3 \sqrt{7} + 3 \sqrt{5} }{7 - 5} \\ = \frac{3 \sqrt{7} + 3 \sqrt{5} }{2}$

$2). \: \: \: \: \: \frac{1}{ \sqrt{8} + \sqrt{3} } \\ rationalize \: the \: denominator \\ \frac{1( \sqrt{8} - \sqrt{3} )}{( \sqrt{8} + \sqrt{3} )( \sqrt{8} - \sqrt{3} )} \\ = \frac{ \sqrt{8} - \sqrt{3} }{ {( \sqrt{8} )}^{2} - {( \sqrt{3} )}^{2} } \\ = \frac{ \sqrt{8} - \sqrt{3} }{8 - 3} \\ = \frac{ \sqrt{8} - \sqrt{3} }{5}$

Thanks for the question bro ❤️❣️✌️✍️✅