3. Px=36x5+72x4-31x3-89x2+3x+9 F: L: L/F : Roots:

Write properties of function: x intercept/zero: x_{1} = - \dfrac{3}{2}; x_{2} = - \dfrac{1}{3}; x_{3} = \dfrac{1}{3}; x_{4} = 1