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

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

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