Question

find the rationalisation factor of 3-√5.​

Answer 1

$\frac{3 - \sqrt{5} }{1} \times \frac{3 + \sqrt{5} }{3 + \sqrt{5} } \\ \\ = > \frac{9 - 5}{3 + \sqrt{5} } = \frac{4}{3 + \sqrt{5} }$

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Fóllòw Më ❤