2 votes 2 votes if P=(A+B) (B+C) =B+AC Q=(A+C) (B+C)=C+AB then find (P+Q)' or P'.Q' ? Alex Louis asked Sep 20, 2016 Alex Louis 291 views answer comment Share Follow See 1 comment See all 1 1 comment reply Praveen Saini commented Sep 20, 2016 reply Follow Share P+Q = B+AC+C+AB = (B+C)+A(B+C) = (B+C)(1+A)= (B+C) (P+Q)' = P'.Q' = (B+C)' = B'.C' 5 votes 5 votes Please log in or register to add a comment.
1 votes 1 votes ( P + Q )' = ( B + AC + C + AB)' =( B + AB + AC + C )' = ( B(1 + A) + C ( A + 1))' = ( B + C )' = B' C' Pankaj kumar answered Sep 24, 2016 Pankaj kumar comment Share Follow See all 0 reply Please log in or register to add a comment.