1. The problem statement, all variables and given/known data Simplify the following expressions (x'y'+xy'+x'y) (p+q'p)(p+qr) 2. Relevant equations Laws of boolean algebra 3. The attempt at a solution For the first one I've found many ways to solve it... something isn't right here (x'y'+xy'+x'y) =x'(y'+y)+xy' =x'+xy' =x'+x+y' =y' OR =y'(x'+x)+x'y =y'+x'y =y'+x'+y =x' I'm definantly doing something wrong here... probably making up laws For the second I'm not sure if the last line is even possible (p+q'p)(p+qr) =pp+pqr+ppq'+q'qr =p+pqr+pq'+0 =p+pqr =p? Can I do that with pqr having 3 variables?