Question

rationalise the denominator of 1/a+√b​

Answer 1

Step-by-step explanation:

The rationalizing factor of a+

b

is a-

b

as the product of these two expressions give a rational number.

Answer 2

Step-by-step explanation:

$\frac{1}{a + \sqrt{b} } \\ = \frac{1 \times a - \sqrt{b} }{(a + \sqrt{b})(a - \sqrt{b)} } \\ = \frac{a - \sqrt{b} }{ {a}^{2} - b }$

hope it works