# Quartic Equation Calculator

A default form of quartic equation is ax^{4} + bx^{3} + cx^{2} + dx + e = 0. It is also called a biquadratic equation. It is a polynomial with the degree of 4, which means the largest exponent is 4. The Quartic equation might have real root or imaginary root to make up a four in total. The online quartic equation calculator is used to find the roots of the fourth-degree equations. Enter the equation in the Biquadratic equation solver and hit calculate to know the roots.

## Biquadratic Equation Solver

A default form of quartic equation is ax^{4} + bx^{3} + cx^{2} + dx + e = 0. It is also called a biquadratic equation. It is a polynomial with the degree of 4, which means the largest exponent is 4. The Quartic equation might have real root or imaginary root to make up a four in total. The online quartic equation calculator is used to find the roots of the fourth-degree equations. Enter the equation in the Biquadratic equation solver and hit calculate to know the roots.

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#### Quartic Equation Formula:

Quartic Equation : ax^{4} + bx^{3} + cx^{2} + dx + e = 0
NOTE : Let p and q be the square root of any 2 non-zero roots.
p = sqrt(y_{1})
q = sqrt(y_{3})
r = -g / (8pq)
s = b / (4a)
x_{1} = p + q + r - s
x_{2} = p - q - r - s
x_{3} = -p + q - r - s
x_{4} = -p - q + r - s
This Quartic equation solver will help you to dynamically calculate the roots of the quartic equation. Calculating roots of Biquadratic equation is made easier using this online tool. The fourth-degree equations can be solved using different methods.