Quadratic equation calculator

Quadratic equation has the basic form: ax2+bx+c=0
Enter the quadratic equation's coefficients a, b, and c of its basic standardized form. A solution of quadratic equations is usually two different real or complex roots or one double root — the calculation using the discriminant.


6x(3x2)+7x=0 18x25x=0  a=18;b=5;c=0 D=b24ac=524180=25 D>0  x1,2=2ab±D=365±25 x1,2=365±5 x1,2=0.138889±0.138889 x1=0.277777778 x2=0   Factored form of the equation:  18(x0.277777778)x=0 

Solution in text:

18x2-5x=0 ... c=0; quadratic equation without constant term

D = b2 - 4ac = 25
D > 0 ... The equation has two distinct real roots

x1 = 0.2777778
x2 = 0

P = {0.2777778; 0}