Solve cubic equations of the form ax³ + bx² + cx + d = 0 using Cardano's method.
Last updated: June 2026 | By Patchworkr Team
Equation
Roots
It converts the cubic into a depressed cubic and uses the discriminant to determine how many real and complex roots appear.
Can a be zero?
No. If a is zero, the equation is not cubic.
Can the roots be complex?
Yes. Cubic equations can have one real root and two complex conjugate roots.
Does the calculator accept decimals?
Yes. It accepts finite decimals and scientific notation.
Why show the discriminant?
It helps you understand whether the equation has repeated or distinct roots.
Related Tools
Solve absolute value equations.
Solve absolute value inequalities.
Apply associative property.
Multiply using box method.
Complete the square method.
Find complex roots.