please help

To begin with, we need to rationalize the denomenator. To do so, we multiply that by $3 + 2\sqrt2$. (this is an excellent website for rationalizing the denominator: https://www.chilimath.com/lessons/intermediate-algebra/rationalizing-the-denominator/)

Anyways, multiply the top and bottom by $3+2\sqrt2$. This will give you $88+54\sqrt{2}$.