Question

https://media.glynlyon.com/a_matalg02_2011/6/t12.gif
write that^ using a fractional exponent.

Answer 1

Cube root of x can be written as
\[\large \sqrt[3]{x}= x^{\frac{1}{3}}\]
Now try :)

Answer 2

is your question about writing the cube root of x^2? you can practice your latex here:
http://openstudy.com/study#/groups/LaTeX%20Practicing!%20%3A)

Answer 3

\[\sqrt[3]{x^2}=x^{2/3} \]