ABSTRACT
Equation: Ax^{2} + B x +C = 0 has Real or Complex solutions:
X_{1,2} = (B ± √(B^{2}  4AC)) / 2A
USAGE
Enter coefficients A, B, C, D in input boxes (
it could be any combination of Decimals, Fractions and Mixed Numbers, positive or negative) 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.

Case A=0 corresponds to linear equation.