# Calculatrice d'équation quartique

La calculatrice trouvera les racines de l'équation quartique dans les deux formes analytiques et approchées.

Enter a quartic equation:

For example, x^4+x^3-3x^2-6x+2=0 or x^4+x=7.

If the calculator did not compute something or you have identified an error, or you have a suggestion/feedback, please write it in the comments below.

Your input: solve the quartic equation $x^{4} - 5 x^{3} - 15 x^{2} + 5 x + 14 = 0$

Multiplicity: $1$,  $x_{1}=7$
Multiplicity: $1$,  $x_{2}=1$
Multiplicity: $1$,  $x_{3}=-1$
Multiplicity: $1$,  $x_{4}=-2$