Answer:
[tex]1.x = 0[/tex]
[tex]2.p(0) = 0[/tex]
[tex]3.x1 = - 4.x2 = 0.x3 = \frac{2}{3} [/tex]
[tex]4.x1 = - 2.x2 = - 1.x3 = 1[/tex]
[tex]5.x1 = - 1.x2 = 2.x3 = 3[/tex]
