Question

rationalise
$rationalise \: \frac{1}{3 + \sqrt{2} }$
rationalise ​

Answer 1

Answer: first ot rationalise

$\frac{1}{3 +\sqrt{2} } multipied by \frac{3-\sqrt{2} }{3-\sqrt{2\\} }\\= \frac{3-\sqrt{2} }{3^{2} -2^{2} } \\=\frac{3-\sqrt{2} }{5}$

use algebric identity( a²+b²) (a²-b²)= a²-b²(in the denominator part of the fraction)

Step-by-step explanation: