Question

rationalise the denominator
1/7+2√12​

Answer 1

$\frac{1}{7 + 2 \sqrt{2} }$

$\frac{1}{7 + 2 \sqrt{2} } \times \frac{7 - 2 \sqrt{2} }{7 - 2 \sqrt{2} }$

$\frac{7 - 2 \sqrt{2} }{ {7}^{2} - {2 \sqrt{2} }^{2} }$

$\frac{7 - 2 \sqrt{2} }{49 -8 }$

$\frac{7 - 2 \sqrt{2} }{41}$