5.2 Exercise 32

Simplify each expression:

ⓐ $\left(c^{4} d^{2}\right)^{5} \left(3 c d^{5}\right)^{4}$ ⓑ $\frac{\left(a^{−2}\right)^{3} \left(a^{2}\right)^{4}}{\left(a^{4}\right)^{5}}$ ⓒ $\left(\frac{3 x y^{2}}{x^{2} y^{−3}}\right)^{2} \left(\frac{9 x y^{−3}}{x^{3} y^{2}}\right)^{−1} .$