## Solving a Quartic Equation by a general formula |

At this web page you are able to solve an equation of the fourth degree. This equation can be described by the following general expression: F(X) = AX ^{4} + BX^{3} + CX^{2} + DX + EX is an unknown real or complex number. F(X) is a function of X. May also have the symbol 'Y'. A, B, C, D and E are all real numbers of constants. If you set F(X) = 0, the equation can be solved. ExampleX ^{4} - 4X^{3} + 4X^{2} + 16X - 32 = 0This equation has got two real and two complex roots: X _{1} = -2, X_{2} = 2, X_{3} = 2 - i2 and
X_{4} = 2 + i2.I've drawn the graph of F(X): F(X) = X ^{4} - 4X^{3} + 4X^{2} + 16X - 32, [-6,7.5]:AX ^{4} + BX^{3} + CX^{2} + DX + E = 0CalculationInput the values of A, B, C, D and E. To start the calculation please press the button. If the calculation does not work, try to first multiply all constants with -1. Algebra |