Que: Simply the boolean expressions to a minimum number of literals:

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

Solution:

( xy'+x'y) + ( xz+x'z') + ( yz+y'z')

= x( XOR symbol) y + x( XNOR symbol) + y (XNOR symbol) z

i believe this is the solution but would like to double confirm. Affirmative that this is the solution?

For those who took the liberty to check thank you so much.