# What is the Cardano formula?

## What is the Cardano formula?

A formula for finding the roots of the general cubic equation over the field of complex numbers x3+px+q=0. When D>0 all three roots are real and distinct. However, according to Cardano’s formula, the roots are expressed in terms of cube roots of imaginary quantities.

### What is the formula for a quartic equation?

There is an analogous formula for the general quartic equation, ax4 + bx3 + cx2 + dx + e = 0 .

How do you Factorise cubic equations?

In general, to factorise a cubic polynomial, you find one factor by trial and error. Use the factor theorem to confirm that the guess is a root. Then divide the cubic polynomial by the factor to obtain a quadratic. Once you have the quadratic, you can apply the standard methods to factorise the quadratic.

What is Cardano algorithm?

Cardano uses Ouroboros, an algorithm that uses proof-of-stake (PoS) protocol to mine blocks. The protocol is designed to reduce energy expenditure during the block production process to a minimum.

## What is a fourth order equation?

A quartic equation, or equation of the fourth degree, is an equation that equates a quartic polynomial to zero, of the form. where a ≠ 0. The derivative of a quartic function is a cubic function.

### How do you write the roots of a cubic equation?

Approach: Let the root of the cubic equation (ax3 + bx2 + cx + d = 0) be A, B and C. Then the given cubic equation can be represents as: ax3 + bx2 + cx + d = x3 – (A + B + C)x2 + (AB + BC +CA)x + A*B*C = 0. Therefore using the above relation find the value of X, Y, and Z and form the required cubic equation.

What is the property of the Cardano formula?

In the Cardano formula, p and q are arbitrary complex numbers. In the case of real coefficients p and q, the property of the roots being real or imaginary depends on the sign of the discriminant of the equation, D= -27q^2 -4 p^3 = -108\\Big (\\frac {q^2} {4} + \\frac {p^3} {27}\\Big).

Who was the first mathematician to write the Cardano formula?

The Cardano formula is named after G. Cardano, who was the first to publish it in 1545. Cardano formula. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Cardano_formula&oldid=29227

## When did Gerolamo Cardano solve the cubic equation?

Later, Tartaglia was persuaded by Gerolamo Cardano (1501–1576) to reveal his secret for solving cubic equations. In 1539, Tartaglia did so only on the condition that Cardano would never reveal it and that if he did write a book about cubics, he would give Tartaglia time to publish.