Question

(x2-y2-z2) +(y2-z2-x2) +(z2-x2-y2) +(x2+y2+z2)
Simplify.
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Answer 1

Answer:

0 ( zero)

Step-by-step explanation:

(x²-y²-z²) + (y²-z²-x²)+(z²-x²-y²) + ( x²+y²+z²)

= x²-x²-x²+x²-y²+y²-y²+y²-z²-z²+z²+z²

=0