Question

Rationalise the denominator 20 over root 2

Answer 1

see explanation

Explanation:

Given

`(20)/(√(2) )`

To rationalise the denominator multiply the numerator and denominator by
`√(2)`, that is

`(20(√(2)) )/(√(2)(√(2)) )`

=
`(20√(2) )/(2)`

= 10
`√(2)`