Answer
a) $5184$
b) $-\frac{3}{5}$
Work Step by Step
a) $(2^33^2)^2=(2\cdot2\cdot2\cdot3\cdot3)^2=72^2=5184$
b) $(-\frac{3}{5})^3(\frac{5}{3})^2=-\frac{3}{5}\cdot-\frac{3}{5}\cdot-\frac{3}{5}\cdot\frac{5}{3}\cdot\frac{5}{3}=-\frac{3\cdot3\cdot3\cdot5\cdot5}{5\cdot5\cdot5\cdot3\cdot3}=-\frac{3}{5}$