Question

Qual a solução deste monstro?

(x+y+z)^5 - (y+z-x)^5 - (z+x-y)^5 - (x+y-z)^5

Answer 1

x^5 + y^5 + z^5 - x^5 + y^5 + z^5 - x^5 + y^5 + z^5 - x^5 + y^5 + z^5

-2x^5 + 4y^5 + 4z^5