Question

(x-y+z)^2+ (x+y-z)^2 + (-x+y+z)​

Answer 1

Answer:

hope this helps you please mark as brainlest answer

Answer 2

Step-by-step explanation:

(x-y+z)^2+ (x+y-z)^2 + (-x+y+z)

x²-y²+z²+x²+y²-z²+(-x)+y+z

x²+x²-x-y²+y²+y+z²-z²+z

x²+x+y+z