x = 0 o x = -2 - x2 = - 2x, x = -3 - x + 3 = 0, x = -2 - x3 + 8 = 0, Indeterminato - x = 2x, x = -3 o x = +3 - (x + 3) · (x - 3) = 0, Impossibile - x2 + 2x = 3x - 4 - x,

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