Quadratic equation has the basic form:
$a{x}^{2}+bx+c=0$

Enter the coefficients a, b, c of quadratic equation in 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.

## Calculation:

#### Solution in text:

-1000n2+400000=0 ... b=0; pure quadratic equation

Discriminant:
D = b2 - 4ac = 1600000000
D>0 ... The equation has two distinct real roots

n1 = 20
n2 = -20

P = {20; -20}