please provide full solution step by step with explanations. solution for $($a to d$).$

If tilde$(A)=a{e}^i$ and tilde$(B)=b{e}^{i2}$ then what is

a$)$ tilde$(A{)}^{-2}$

b$)$ tilde$(A{)}^{**}$tilde$(B)($note $*$ means conjugate$)$

c$)$ tilde$(A)tilde(B{)}^2$

d$)\frac{A^2}{(\frac{?}{\text{b}\text{a}\text{r}}(B))}$