0=(0.77-2x)(0.77-2x)

Solution for 0=(0.77-2x)(0.77-2x) equation:

0=(0.77-2x)(0.77-2x)

We move all terms to the left:

0-((0.77-2x)(0.77-2x))=0

We add all the numbers together, and all the variables

-((-2x+0.77)(-2x+0.77))+0=0

We add all the numbers together, and all the variables

-((-2x+0.77)(-2x+0.77))=0

We multiply parentheses ..

-((+4x^2-1.54x-1.54x+0.5929))=0


We calculate terms in parentheses: -((+4x^2-1.54x-1.54x+0.5929)), so:

(+4x^2-1.54x-1.54x+0.5929)

We get rid of parentheses

4x^2-1.54x-1.54x+0.5929

We add all the numbers together, and all the variables

4x^2-3.08x+0.5929

Back to the equation:

-(4x^2-3.08x+0.5929)


We get rid of parentheses

-4x^2+3.08x-0.5929=0

a = -4; b = 3.08; c = -0.5929;
Δ = b2-4ac
Δ = 3.082-4·(-4)·(-0.5929)
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{-3.08}{-8}=2.85185185185/7.40740740741$