Question

The rationalising factor of `sqrt(5)` is ______.

Options

• `sqrt(5)`

• 1

• `sqrt(2)`

• `sqrt(3)`

Answer 1

The rationalising factor of `sqrt(5)` is `underlinebb(sqrt(5))`.

Explanation:

The rationalising factor of `sqrt(5)` is `sqrt(5)` itself because when you multiply `sqrt(5)` by `sqrt(5)`, the product is a rational number `sqrt(5) xx sqrt(5) = 5`, which is rational.

Hence, `sqrt(5)` is the rationalising factor of `sqrt(5)`.