Question

Rationalise the denominator 1/√7+√2​

Answer 1

Answer:

it's given 1/√7+√2

rationalizing the denominator =1/√7+√2 × √7-√2/√7-√2

= √7-√2/(√7+√2)(√7-√2)

=√7-√2/(√7)²-(√2)²

=√7-√2/7-2

=√7-√2/5