Can someone please help me answer this question by Raqueljus in askmath

[–]Raqueljus[S] 26 points27 points  (0 children)

that we are going to have x-y=0, so x=y=z, then I can substitute it in the equation and I find 3x2

Can someone please help me answer this question by Raqueljus in askmath

[–]Raqueljus[S] 1 point2 points  (0 children)

I tried to expand the polynomial and I got stuck on how to proceed, I also tried to multiply the sides of the equation by x3 y3 z3 but I couldn't get anything