X1=?

X2=?

X2=?

This app works on any combination of Decimals, Fractions and Mixed Numbers. Select Fractions or Decimals, enter the coefficients and click on SOLVE button. Following rules apply:

If Text box **A** is empty, system will assign 1 to **A**, so the Equation will look like:
of **x2+Bx+C=D**.

If Text box **B** is empty, system will assign 0 to it, so the Equation will be like:
**Ax2+C=D**.

If Text box **C** is empty, system will assign 0 to it, so the Equation will be like:
**Ax2+Bx=D**.

Equation **Ax2-Bx+C=D**
should be entered as **Ax2+(-B)x+C=D**.

Quadratic Equation: >Ax^{2}+Bx+C=0 has general solution:

x2= -(B-SQRT((B)2 - 4AC))/2A;

where both roots could be Real or Complex numbers. If A=0 the equation transorms to the linear one.