Simplify Each Expression $(-9)^{2} \cdot(-9)^{3} \cdot(-9)^{8}$ (B) $\left(2 x^{2} y^{5}\right)^{3}$ (C) $4(x y)^{0}$

Short Answer

Simplify each expression. Leave answers with exponents. Assume that all variables represent nonzero real numbers.
(a) $(-9)^{2} \cdot(-9)^{3} \cdot(-9)^{8}$
(b) $\left(2 x^{2} y^{5}\right)^{3}$
(c) $4(x y)^{0}$
(d) $\left(-\frac{2}{3}\right)^{4}$
(e) $\left(-\frac{p}{q^{3}}\right)^{2}$