.222x^2-1.11x+.889=0

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Solution for .222x^2-1.11x+.889=0 equation:


Simplifying
0.222x2 + -1.11x + 0.889 = 0

Reorder the terms:
0.889 + -1.11x + 0.222x2 = 0

Solving
0.889 + -1.11x + 0.222x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.222'.
4.004504505 + -5x + x2 = 0

Move the constant term to the right:

Add '-4.004504505' to each side of the equation.
4.004504505 + -5x + -4.004504505 + x2 = 0 + -4.004504505

Reorder the terms:
4.004504505 + -4.004504505 + -5x + x2 = 0 + -4.004504505

Combine like terms: 4.004504505 + -4.004504505 = 0.000000000
0.000000000 + -5x + x2 = 0 + -4.004504505
-5x + x2 = 0 + -4.004504505

Combine like terms: 0 + -4.004504505 = -4.004504505
-5x + x2 = -4.004504505

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = -4.004504505 + 6.25

Reorder the terms:
6.25 + -5x + x2 = -4.004504505 + 6.25

Combine like terms: -4.004504505 + 6.25 = 2.245495495
6.25 + -5x + x2 = 2.245495495

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 2.245495495

Calculate the square root of the right side: 1.498497746

Break this problem into two subproblems by setting 
(x + -2.5) equal to 1.498497746 and -1.498497746.

Subproblem 1

x + -2.5 = 1.498497746 Simplifying x + -2.5 = 1.498497746 Reorder the terms: -2.5 + x = 1.498497746 Solving -2.5 + x = 1.498497746 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 1.498497746 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 1.498497746 + 2.5 x = 1.498497746 + 2.5 Combine like terms: 1.498497746 + 2.5 = 3.998497746 x = 3.998497746 Simplifying x = 3.998497746

Subproblem 2

x + -2.5 = -1.498497746 Simplifying x + -2.5 = -1.498497746 Reorder the terms: -2.5 + x = -1.498497746 Solving -2.5 + x = -1.498497746 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -1.498497746 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -1.498497746 + 2.5 x = -1.498497746 + 2.5 Combine like terms: -1.498497746 + 2.5 = 1.001502254 x = 1.001502254 Simplifying x = 1.001502254

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.998497746, 1.001502254}

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