QuestionSimplify these expressions with positive indices:
1. $(11 - 18)$
2. $(3 w^{6})^{3}$
3. $(2^{2} s^{5})^{3}$
4. $\left(\frac{p}{q^{5}}\right)^{3}$
5. $\left(\frac{-m^{3}}{n^{5}}\right)^{5}$
6. $(s^{3})^{-5} \times s^{7}$
7. $u^{-4} \div (u^{5})^{-2}$
8. $\frac{d^{3} \div (d^{-5})^{2}}{d^{-2}}$
9. $\frac{1}{(x y)^{-3}}$