Roots of cubic equations. Find the roots for each of thefollowing cubic equations using Newton?s method:

5.9. Roots of cubic equations. Find the roots for each of the following cubic equations using Newton's method: (a) x + 3x-1=0 (b) x+x+x-2=0 (c) x +5x2 = 0 (hint: find an approximation to a first root a using Newton's method, then divide the left hand side of the equation by (x a) to obtain a quadratic equation, which can be solved by the quadratic formula).