I need help with a few questions for my computer engineering homework. Thanks!

Simplify the following Boolean expressions, and implement them with two-level NAND gate circuits:

a) F(A,B,C,D)=(A+C+D)(A+C)(C+D)

b) F(A,B,C,D)=A+B+D+BC

Simplify the following Boolean expressions, and implement them with two-level NOR gate circuits:

a) F(w,x,y,z)= (0,3,12,15)

b) F(x,y,z) = [(x+y)(x+z)]

Implement the following Boolean function F, together with the dont-care conditions d, using no more than two NOR gates:

F(A,B,C,D) = (2,4,10,12,14)

d(A,B,C,D) = (0,1,5,8)