4.289x^2-8.578x+3.289=0

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Solution for 4.289x^2-8.578x+3.289=0 equation:


Simplifying
4.289x2 + -8.578x + 3.289 = 0

Reorder the terms:
3.289 + -8.578x + 4.289x2 = 0

Solving
3.289 + -8.578x + 4.289x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
4.289 the coefficient of the squared term: 

Divide each side by '4.289'.
0.7668454185 + -2x + x2 = 0

Move the constant term to the right:

Add '-0.7668454185' to each side of the equation.
0.7668454185 + -2x + -0.7668454185 + x2 = 0 + -0.7668454185

Reorder the terms:
0.7668454185 + -0.7668454185 + -2x + x2 = 0 + -0.7668454185

Combine like terms: 0.7668454185 + -0.7668454185 = 0.0000000000
0.0000000000 + -2x + x2 = 0 + -0.7668454185
-2x + x2 = 0 + -0.7668454185

Combine like terms: 0 + -0.7668454185 = -0.7668454185
-2x + x2 = -0.7668454185

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -0.7668454185 + 1

Reorder the terms:
1 + -2x + x2 = -0.7668454185 + 1

Combine like terms: -0.7668454185 + 1 = 0.2331545815
1 + -2x + x2 = 0.2331545815

Factor a perfect square on the left side:
(x + -1)(x + -1) = 0.2331545815

Calculate the square root of the right side: 0.48286083

Break this problem into two subproblems by setting 
(x + -1) equal to 0.48286083 and -0.48286083.

Subproblem 1

x + -1 = 0.48286083 Simplifying x + -1 = 0.48286083 Reorder the terms: -1 + x = 0.48286083 Solving -1 + x = 0.48286083 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 0.48286083 + 1 Combine like terms: -1 + 1 = 0 0 + x = 0.48286083 + 1 x = 0.48286083 + 1 Combine like terms: 0.48286083 + 1 = 1.48286083 x = 1.48286083 Simplifying x = 1.48286083

Subproblem 2

x + -1 = -0.48286083 Simplifying x + -1 = -0.48286083 Reorder the terms: -1 + x = -0.48286083 Solving -1 + x = -0.48286083 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -0.48286083 + 1 Combine like terms: -1 + 1 = 0 0 + x = -0.48286083 + 1 x = -0.48286083 + 1 Combine like terms: -0.48286083 + 1 = 0.51713917 x = 0.51713917 Simplifying x = 0.51713917

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.48286083, 0.51713917}

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