# FREE SOLVING ALGEBRAIC EQUATIONS 2, 3 AND 4 POWER

On this page you can free online solve a quadratic equation, solve a cubic equation, and solve an equation of the 4th power. Equation must have real coefficients, but the roots are computed both real and complex. Both for real and complex roots of equations, are calculated values of the relative error of the substitution.

To solve the equation of the required type, enter the values of the corresponding coefficients and click "Calculate". The resulting values will be placed in the appropriate fields. Note that the coefficient A at the highest power unknown shouldn't be zero. Absolute term of equation shouldn't be zero too. The 4th degree equation should NOT be biquadratic, ie, B and D should not be zero at the same time!

To recalculate enough to change only the desired ratio.

#### Solve the quadratic equation (2 powers) of the form: "A*x2 + B*x + C = 0"

Coefficient   A=
Coefficient   B=
Coefficient   C=

To obtain the roots of the equation, press

#### Solve the cubic equation (3 powers) of the form: "A*x3 + B*x2 + C*x + D = 0"

Coefficient   A=
Coefficient   B=
Coefficient   C=
Coefficient   D=

To obtain the roots of the equation, press

#### Solve the equation 4 powers form: "A*x4 + B*x3 + C*x2 + D*x + E = 0"

Coefficient   A=
Coefficient   B=
Coefficient   C=
Coefficient   D=
Coefficient   E=

To obtain the roots of the equation, press