Question

How do you simplify 5 over square root of 7?

Answer 1

You cannot.

Explanation:

Let's see,
`frac(5)(sqrt(7))`
5 is a prime number (you cannot make 5 by multiplying two integers).
7 is also a prime number.
Therefore you cannot simplify this fraction further.
You can rewrite it though.
`frac(5)(sqrt(7)) = 5*7^(frac(-1)(2))`

Answer 2

`5/sqrt(7) = (5sqrt(7))/7`

Explanation:

You cannot simplify it much, but you can rationalise the denominator by multiplying both numerator and denominator by `sqrt(7)`:

`5/sqrt(7) = (5sqrt(7))/(sqrt(7)sqrt(7)) = (5sqrt(7))/7`