Boolean algebra help with 4.9a

A switching circuit has four inputs as shown. A and B represe bits of a binary number N,. C and D represent the first and s number N. The output is to be l only if the product Ni N, S (a) Find the minterm expansion for F (b) Find the maxterm expansion for F. 4.8 Express your answers in both decimal notation and algebr Ni 4.9 Given: Fla, b, c) abc +b' (a) Express F as a minterm expansion. (Use m-notation.) (b) Express F as a maxterm expansion. (Use M-notation.) (c) Express F' as a minterm expansion. (Use m-notation.) (d) Express F' as a maxterm expansion. (Use M-notation.) 4.10 Work Problem 4.9 using: Fla, b, c, d)- (a + b+ d(a' + cla' +b'+a+b+c+d) 4.11 (a) Implement a full subtracter using a minimum number of gate relation between s, and d? Between c+i and b,i? 4.12 Design a circuit which will perform the following function on thre (b) Compare the logic equations for the full adder and full subt It will give a result S, S,S,So,a carry, and a borrow. Use eight full adde type of gates. Assume that negative numbers are represented in 2's