can I change the size of the text in latex if I can how? (Thinking)

because sometimes when you write a large data it is become small like this

$\displaystyle \frac{\left(\frac{(2x^2)z^{-5}}{3z^4}\right)^{-5}}{\left(\frac{(3x^4)(z^9)}{2x^{-6}}\right)^{3}}$