# 4th Degree Equation Solver

A general form of fourth-degree equation is ax^{4} + bx^{3} + cx^{2} + dx + e = 0. It is otherwise called as a biquadratic equation or quartic equation. Generally, any polynomial with the degree of 4, which means the largest exponent is 4 is called as fourth degree equation. Here is the online 4th degree equation solver for you to find the roots of the fourth-degree equations. Enter the equation in the fourth degree equation calculator and hit calculate to know the roots with ease.

## Fourth Degree Equation Calculator

A general form of fourth-degree equation is ax^{4} + bx^{3} + cx^{2} + dx + e = 0. It is otherwise called as a biquadratic equation or quartic equation. Generally, any polynomial with the degree of 4, which means the largest exponent is 4 is called as fourth degree equation. Here is the online 4th degree equation solver for you to find the roots of the fourth-degree equations. Enter the equation in the fourth degree equation calculator and hit calculate to know the roots with ease.

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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
Feel free to try this online 4th degree equation calculator to make your biquadratic equations easier and quicker. You can expect the reliable results consistenlty from this fourth degree equation calculator.