Simplify each expression.
${\left(4x^2\right)}^3$

Simplify the expressions using the quotient to a power property.

${\left(\frac{a}{-3}\right)}^4$

Simplify.

${\left(\frac{x}{4y}\right)}^3$

Simplify.

${\left(\frac{y^4}{5}\right)}^3$

Simplify.

${\left(\frac{3x^4}{y^2}\right)}^3$

Simplify each expression.

$(-6^5{)}^{{}^5}$

Simplify each expression.

$(x^2{z}^5{)}^4$

Simplify each expression.

$(-2x^4{y}^5{)}^4$

Simplify each expression.

$(4x^3{y}^2{z}^3{)}^2$