Please do the last one at least.

(4 points) Find the simplified expression for X, and X2 in Table 2. Specify the corresponding values for don't care. 00011 0 x1 010 0 0 0110 0 1 0 0I 10 Table 2: Truth Table for Xi & X2 5. (6 points) Design a 4-bit addition subtraction module which performs addition or subtraction based on input signal sub. If sub is 0, the circuit should add the two numbers. If sub is 1, the circuit should perform 2's complement subtraction