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" EXAMPLB 30If "x!=y!=z" and "|[x,x^(2),...

" EXAMPLB 30If "x!=y!=z" and "|[x,x^(2),1+x^(2)],[y,y^(2),1+y^(3)],[z,z^(2),1+z^(3)]|=0," then prove that "xyz=-1

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