How do you convert a pos form into sop form?

Answer 1

take the whole compliment, since POS is a dual to the SOP form,In the following we apply de-morgan's laws which are : (a+b)' = a' b' ; (ab)' = a' + b'

(A'CD + E'F + BCD)'

= (A'CD + E'F)' * (BCD)'

= (A'CD)' * (E'F)' * (BCD)'

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

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

which is the product of sums, that is POS form!