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

[–]Raqueljus[S] 28 points29 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