Answer :
[tex]\frac{x^7}{x^2}[/tex]
Remember if we are dividing variables with exponent, we are subtracting the exponent of the denominator from the exponent of the numerator ( numerator - denominator) if and only if they have the same base (in this case, it is x) otherwise we are not allowed to do so.
[tex]\frac{x^7}{x^2}=x^{7-2}=x^5[/tex]