Equation fourth degree online calculator

Online calculator which helps you in solving the equations of the fourth degree.
Fourth degree algebraic equations is higher, in which there is an analytical solution in radicals in General (i.e. for any value of coefficients).

ax4 + bx³ + cx² + dx + e = 0
x4 + x³ + x² + x + e

X1:      i
X2:      i
X3:      i
X4:      i