# How do you simplify each expression (z^5)^3?

${\left({z}^{5}\right)}^{3} = {z}^{15}$
${\left({z}^{5}\right)}^{3} = \left({z}^{5}\right) \left({z}^{5}\right) \left({z}^{5}\right) = {z}^{5 + 5 + 5} = {z}^{15}$.