Help Me, please

If  $x^\frac34$  is written as a radical in the form of  $\sqrt[a]{b^c}$ , what is the value of  $a$ ,  $b$ , and  $c$ ?

The denominator of the exponent is the index of the radical. So...

$x^\frac34\,=\,\sqrt[4]{x^3}$

Now it is in the form  $\sqrt[a]{b^c}$  , where

a  =  4 ,  b  =  x ,  and  c  =  3     

Firstly you need an eqation to solve with only 1 vareable or letter.

Thank you Hectictar and The Deathly Hollows