Question

This is the question

Answer 1

First, it has irrational denominator, you should rationalize the denominator.
See my attachment on the second row.

Then simplify it, see my attachment on the third and fourth row.

Answer 2

I just answered this for you. the answer is sqrt(77)/(11) this is found by multiplying the top and bottom of fraction by sqrt of (11) then the bottom simplifies to 11 and the top or numerator simplifies to sqrt(77) so the answer is sqrt(77)/(11)