plz simplify x'y'+xy+x'y using theorem and postulate (digital disign)

 

plz simplify x'y'+xy+x'y using theorem and postulate (digital disign)

factor y out of the second two terms so that we get:

x'y' + (x + x')y

the term x + x' = 1 so we're left with

x'y' + y

This can be rewritten as

(y + y')(y + x')

The first term = 1 so we're left with

x' + y