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p=- 1/3
pq² (q²-1)-(q²-1)(q²+1)-q³-(pq-p) =pq^4-pq²-q^4+1-q³-pq+p
-1/3 *3+1/3*3-9+1-3√3+1/3 *√3 -1/3=
-1+1-9+1-3√3+√3/3-1/3=-8 i 1/3- 2 2/3√3