Show work.

1. Show, by means of a truth table which, if any, of the following Boolean expressions are identical.

f1=x+xyz+x'y

f2=x+x'yz+yz

f3=x+y

2. Draw a network using ONLY AND gates, OR gates and INVERTERS which has
an output

F=(A+B')C(D+E)'+G

3. Find the dual and complement of the following expression. (Do not simplify.)

F = [1 + (a + b')c + d'e'][f' + gh'(i + j)] + k*0