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Quartic equation

This page calculates the roots of equation ax⁴+bx³+cx²+dx+e=0

The calculation is implemented only if the coefficient a is not equal to zero.

If your coefficients are real numbers, set the imaginary part equal to zero.

Space characters in fields are removed

The decimal point is denoted by .

If coefficients are real and the complex z is a root then the conjugate z^* is also root.

Calculator

Blank fields are assumed to be the number zero