Question

is there an indentity like xcube-ycube-zcube+3xyz

Answer 1

actually this identity exists .....

We know that x3 + y3 + z3 – 3xyz = (x+ y + z) (x2 + y2 + z2 – xy – yz – zx). Ifx + y + z = 0, then x3 + y3 + z3 – 3xyz = 0 or x3 + y3 + z3 = 3xyz.

hope it is helpful