1. Simplify the following. Write the final answer in the form x try. (a) 4 - 62 2 (b) 4 1 - i ( c) (5 + 2 ) - 1 (d) 1(9 - 32)(1 + i)l 2. Find all solutions (that is, you are looking for solutions in C) of the following equations. (a) 22 - 1 =0 (b) 22 + 1 =0 (c) 23 - 4522 + 2 = 0 (d) 22 - 1 - z+1 =0 2+1