# Is there a formula to solve cubic equations?

## Is there a formula to solve cubic equations?

A cubic equation is an equation which can be represented in the form a x 3 + b x 2 + c x + d = 0 ax^3+bx^2+cx+d=0 ax3+bx2+cx+d=0, where a , b , c , d a,b,c,d a,b,c,d are complex numbers and a is non-zero. By the fundamental theorem of algebra, cubic equation always has 3 roots, some of which might be equal.

Who solved the cubic equation first?

Scipione del Ferro
albeit unsuccessfully, to solve nontrivial cubic equations. In fact, the first general solution was found by Scipione del Ferro at the beginning of the 16th century and rediscovered by Niccolò Tartaglia several years later. The solution was published by Gerolamo Cardano in his Ars magna (Ars Magna or the Rules…

How do you solve a cubic polynomial?

Factorising Cubic Polynomial

1. Find x = a where p(a) = 0.
2. Then (x – a) is the factor of p(x)
3. Now divide p(x) by (x – a) i.e. (p(x))/((x – a))
4. And then we factorise the quotient by splitting the middle term.

### What comes after cubic?

Degree 3 – cubic. Degree 4 – quartic (or, if all terms have even degree, biquadratic) Degree 5 – quintic. Degree 6 – sextic (or, less commonly, hexic)

Who derived the cubic formula?

The solution to the cubic (as well as the quartic) was published by Gerolamo Cardano (1501-1576) in his treatise Ars Magna. However, Cardano was not the original discoverer of either of these results. The hint for the cubic had been provided by Niccolò Tartaglia, while the quartic had been solved by Ludovico Ferrari.

How do you solve a cubic equation?

Use the factor theorem to rewrite the equation. Factor (x – r1) out of the equation. You will be left with (x – r1)(x^2 + ax + b) = 0. In the example, you will rewrite the equation as (x + 1)(x^2 + ax + b) = 0. Apply synthetic division to the original cubic equation to yield a quadratic expression.

#### What is the formula for solving cubic equations?

A general cubic equation is of the form ax3 + bx2 + cx + d = 0 (third degree polynomial equation). The roots of this equation can be solved using the below cubic equation formula. The third degree polynomial equation formula displays the equation to solve three real roots (x1, x2 and x3) of the cubic equation.

How to solve cubic functions?

Factor the resulting quadratic equation,if possible.

• Solve the portion in parentheses with the quadratic formula if you can’t factor it manually. Do this to find two of the answers to your cubic equation.
• Use zero and the quadratic answers as your cubic’s answers. While quadratic equations have two solutions,cubics have three.
• What is a cubic equation?

Definition of cubic equation.: a polynomial equation in which the highest sum of exponents of variables in any term is three. 