Convert to Product of Sums (POS) 1) AB' + C'D We would use De Morgan's Law on this. So the POS form would be: (A + B')(C' + D) 2) ac + a'bd' + a'be + a'c'de Apply De Morgan's Law again. (a + c)(a' + b + d')(a' + b + e)(a' + c' + d + e) Please tell me if those answers are correct. Thank you.