Regla 12

Regla 12
(A + B)(A + C)=A + BC
(A + B)(A + C)=AA + AC + AB + BC ley distribuitiva
(A + B)(A + C)=A + AC + AB + BC regla 7: AA=A
(A + B)(A + C)= A(1 + C) + AB + BC obtener factor común(ley distributiva)
(A + B)(A + C)= A.1 + AB + BC regla 2: 1 + C = 1
(A + B)(A + C)= A(1 + B) + BC obtener factor común (ley distributiva)
(A + B)(A + C)= A.1 + BC regla 2: 1 + B = 1
(A + B)(A + C)= A + BC regla 4: A.1=A