Question

Rationalise denominator of 1/ 5 + 3 root 2

Answer 1

Step-by-step explanation:

$\frac{1}{5 + 3 \sqrt{2} }$

In order to rationalize the denominator, multiply and divide with

$5 - 3 \sqrt{2}$

it becomes,

$\frac{5 - 3 \sqrt{2} }{(5 + 3 \sqrt{2} ) (5 - 3 \sqrt{2}) }$

$\frac{5 - 3 \sqrt{2} }{25 - 18}$

$\frac{5 - 3 \sqrt{2} }{7}$

Answer 2

Answer:

see the attachment ......