Question

Rationalise the denominator of `9/sqrt(3)`.

Answer 1

To rationalise the denominator of `9/sqrt(3)`

Multiply numerator and denominator by `sqrt(3)`:

`9/sqrt(3) xx sqrt(3)/sqrt(3) = (9sqrt(3))/3`

Now simplify:

`(9sqrt(3))/3 = 3sqrt(3)`