(a) Express the complex number (4 -30)3 in the form a + bi. (b) Express the below complex number in the form a + bi. 4 5i (6-4i) (c) Consider the following matrix. 2+3i 1 4i "[I-3i 2-4i Let B-A-1. Find b2i (i.e., find the entry in row 2, column 1 of A-1)