Question

rationalize the denominator 7/√5+√2​

Answer 1

Question :

Rationalise the denominator of - $\frac{7}{\sqrt{5}+\sqrt{2} }$

Answer :

$\frac{7}{\sqrt{5}+\sqrt{2} }\\\\\implies \frac{7}{\sqrt{5}+\sqrt{2} }*\frac{\sqrt{5}-\sqrt{2} }{\sqrt{5}-\sqrt{2} } \\\\\implies\frac{7\sqrt{5}-7\sqrt{2} }{5-2} \\\\\implies \boxed{\frac{7\sqrt{5}-7\sqrt{2} }{3}}$

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