Express 2+ j3 and 1-j2 in polar form and apply DeMoivre's theorem to evaluate 2+13)* 1-12 Express the result in the form a+jb and in exponential form. Find the fifth roots of -3 + j3 in polar form and in exponential form. Express 5+j12 in polar form and hence evaluate the principal value of V(5 + j12), giving the results in the form a+jb and in the form re.