Question

7/2√3+√5 rationalise the denominator​

Answer 1

Step-by-step explanation:

$\frac{7}{2 \sqrt{3} + \sqrt{5} } \times \: \frac{2 \sqrt{3} - \sqrt{5} }{2 \sqrt{3} - \sqrt{5} } \\ = \frac{7(2 \sqrt{3} - \sqrt{5}) }{7} = 2 \sqrt{3} - \sqrt{5}$

for rationalising the denominator

we multiply and divide whole fraction by the conjugate of the denominator...

so the denominator get rationalized..

hope this will help you..

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