Question

9. Prove that: (x - y) ^3+ (y - z)^3+ (z - x)^3 - 3(x - y) (y - z) (z - x) = 2(x^3+ y^3+ z^3)
​

Answer 1

Answer:

fnrhththrhrhththfhcurhfufrjfurjfjfjdjdjd