Question

rationalise 1/7+3root2​

Answer 1

Answer:-

$\frac{1}{7 + 3 \sqrt{2} } \\ \frac{1}{7 + 3 \sqrt{2} } \times \frac{7 - 3 \sqrt{2} }{7 - 3 \sqrt{2} } \\ \frac{7 - 3 \sqrt{2} }{ {7}^{2} - {(3 \sqrt{2)} }^{2} } \\ \frac{7 - 3 \sqrt{2} }{49 - 18} \\ \frac{7 - 3 \sqrt{2} }{31}$

u'r done!!

Thnx✌️♥️~