0=-0.0197(x2-39x+380.25)

Solution for 0=-0.0197(x2-39x+380.25) equation:

0=-0.0197(x2-39x+380.25)

We move all terms to the left:

0-(-0.0197(x2-39x+380.25))=0

We add all the numbers together, and all the variables

-(-0.0197(+x^2-39x+380.25))+0=0

We add all the numbers together, and all the variables

-(-0.0197(+x^2-39x+380.25))=0


We calculate terms in parentheses: -(-0.0197(+x^2-39x+380.25)), so:

-0.0197(+x^2-39x+380.25)

We multiply parentheses

-0.0197x^2+0.7683x-7.490925

Back to the equation:

-(-0.0197x^2+0.7683x-7.490925)


We get rid of parentheses

0.0197x^2-0.7683x+7.490925=0

a = 0.0197; b = -0.7683; c = +7.490925;
Δ = b2-4ac
Δ = -0.76832-4·0.0197·7.490925
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0.7683}{0.0394}=19+0.0197/0.0394$