11. In the case of cubic equations , Lagrange's method gives the same solution as Cardano's. 12. In the 12th century, another root of a cubic equation . 13. By the way, check your coefficient of x in the cubic equation you have above. 14. Namely a preliminary step to solving a cubic equation . 15. In particular, he derived general methods for solving cubic equations and even some higher orders. 16. The cubic equation article is long-- would an article on the Casus Irreducibilis help, I wonder? 17. Cubic equations may be solved by solid geometry.18. This particular geometric solution of cubic equations has been further investigated and extended to degree four equations. 19. You want a formula for solving the cubic equation like a formula for solving the quadratic equation? 20. The values of trigonometric functions of angles related to 2 \ pi / 7 satisfy cubic equations .
