Question

add
(x²-y² +z²-3xyz) and (x ²-y²+z²+xyz)​

Answer 1

Answer:

2 x^2 - 2 y^2 + 2 z^2 - 2xyz

Step-by-step explanation:

(x^2 - y^2 + z^2 - 3xyz) + (x^2 - y^2 + z^2 + xyz)

= 2 x^2 - 2 y^2 + 2 z^2 - 2xyz