Question

Which expression is equal to 2/√7

Answer 1

`(2√(7) )/(7)`

Explanation:

Note that
`√(7)` ×
`√(7)` = 7

Given

`(2)/(√(7) )`

Rationalise the denominator by multiplying numerator/denominator by
`√(7)`, that is

`(2)/(√(7) )` ×
`(√(7) )/(√(7) )`

=
`(2√(7) )/(7)`