Question

pls i need it quickly ​

Answer 1

Answer:

Multiply both numerator and denominator by the value of denominator

Then further slove it

you will get the result

Answer 2

Answer:

we have

$⇒ \frac{1}{( \sqrt{5} - \sqrt{7} )}$

Rationalising,

we get

$⇒ \frac{1}{2 \sqrt{5} - \sqrt{7} } \times \frac{(2 \sqrt{5} + \sqrt{7} ) }{(2 \sqrt{5} + \sqrt{7} )} = \frac{(2 \sqrt{5} + \sqrt{7} ) }{2 \sqrt{5} {)}^{2} - ( \sqrt{7} {)}^{2} }$

$⇒ \frac{(2 \sqrt{5} + \sqrt{3}) }{20 - 7} = \frac{2 \sqrt{5} + \sqrt{7} }{13}$

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