(25 pts) Question #3: Binary Addition & Subtraction (a) Add (-18) and (-11) by using 1's and 2's complement representations (b) Add (+13) and (-9) by using 1's and 2's complement representations. (c) Subtract (+13) from (-9) by using 1's and 2's complement representations (d) Subtract (-14) from (-17) by using 1's and 2's complement representations (5 pts) (5 pts) (5 pts) (5 pts) If you are a computer designer, will you prefer the 1's complement over the 2's complement for the subtraction operation? Explain your reasons. (5 pts) (10 pts) Question #4: Implementation of a Boolean function using a CMOS Implement the following Boolean expressions by using a PMOS for a pull-up network (PUN) and an NMOS for a pul-down network (PDN): (5 pts) (5 pts) (b) Z2(A,B,C) AB'+ B'C+ CA