Question

5 over square root of 2 .

Answer 1

the answer is squaroot pf 5!

Answer 2

\[5/\sqrt{2}\]
needs to be rationalized because we cannot leave a radical in the denominator of a fraction.
\[(5/\sqrt{2} )* (\sqrt{2}/\sqrt{2})\]
So we multiply by sqrt2 over sqrt2 which equals 1. It allows us to change how it looks without changing the value.
and we get
\[5\sqrt{2}/2\]