Question

rationalise the denominator
1/5+ 3V 2​

Answer 1

$\frac{1}{5 + 3 \sqrt{2} } \\ \\ \frac{1(5 - 3 \sqrt{2} )}{5 + 3 \sqrt{2} (5 - 3 \sqrt{2} )} \\ \\ \frac{5 - 3 \sqrt{2} }{ {(5)}^{2} - {(3 \sqrt{2}) }^{2} } \\ \\ \frac{5 - 3 \sqrt{2} }{25 - 18} = \frac{5 - 3 \sqrt{2} }{7}$

Answer 2

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