hey, i just solve it.
i can know the value of A,B,C.
now if i can know what is A,B,C. i get:fsop=BC+AB+ACD'X'+BDX'+A'DY
what i did is first take all the "1" (if i can use with Phi so i also use it).
then i take the Variables (if i can use here with "1" of Phi i use it.)
thank you.