Question

X(x²+y²-z²) +y(-x²-y²+z²) - z(x²+y²-z²)​

Answer 1

Step-by-step explanation:

X(x²+y²-z²) +y(-x²-y²+z²) - z(x²+y²-z²)

= x^3+xy²-xz²) -x²y-y^3+z²y - x²z+y²z-z^3

= x^3-y^3-z^3+xy²-xz²-x²y+z²y - x²z+y²z

So X(x²+y²-z²) +y(-x²-y²+z²) - z(x²+y²-z²) = x^3 - y^3 - z^3 + xy² - xz²- x²y + z²y - x²z + y²z