Simplify the expression. 8 1 6th – 9 1 4th over, algebra homework help

Simplify the expression.

fraction numerator 8 to the power of begin display style 1 over 6 end style end exponent space minus space 9 to the power of begin display style 1 fourth end style end exponent over denominator square root of 3 space plus thin space square root of 2 end fraction