Question

rationalise the denominator 5/√7-√5​

Answer 1

Answer:

$==: \frac{5}{\sqrt{7} - \sqrt{5} } \\==: \frac{5}{\sqrt{7} - \sqrt{5} } * \frac{\sqrt{7} + \sqrt{5}}{\sqrt{7} + \sqrt{5} }\\==: \frac{5\sqrt{7} + 5\sqrt{5}}{7 - 5}\\==: \frac{5\sqrt{7} + 5\sqrt{5}}{2}$

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