2x^2-4x=1.33333

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Solution for 2x^2-4x=1.33333 equation:


Simplifying
2x2 + -4x = 1.33333

Reorder the terms:
-4x + 2x2 = 1.33333

Solving
-4x + 2x2 = 1.33333

Solving for variable 'x'.

Reorder the terms:
-1.33333 + -4x + 2x2 = 1.33333 + -1.33333

Combine like terms: 1.33333 + -1.33333 = 0.00000
-1.33333 + -4x + 2x2 = 0.00000

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

Divide each side by '2'.
-0.666665 + -2x + x2 = 0.00000

Move the constant term to the right:

Add '0.666665' to each side of the equation.
-0.666665 + -2x + 0.666665 + x2 = 0.00000 + 0.666665

Reorder the terms:
-0.666665 + 0.666665 + -2x + x2 = 0.00000 + 0.666665

Combine like terms: -0.666665 + 0.666665 = 0.000000
0.000000 + -2x + x2 = 0.00000 + 0.666665
-2x + x2 = 0.00000 + 0.666665

Combine like terms: 0.00000 + 0.666665 = 0.666665
-2x + x2 = 0.666665

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 = 0.666665 + 1

Reorder the terms:
1 + -2x + x2 = 0.666665 + 1

Combine like terms: 0.666665 + 1 = 1.666665
1 + -2x + x2 = 1.666665

Factor a perfect square on the left side:
(x + -1)(x + -1) = 1.666665

Calculate the square root of the right side: 1.290993803

Break this problem into two subproblems by setting 
(x + -1) equal to 1.290993803 and -1.290993803.

Subproblem 1

x + -1 = 1.290993803 Simplifying x + -1 = 1.290993803 Reorder the terms: -1 + x = 1.290993803 Solving -1 + x = 1.290993803 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 = 1.290993803 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.290993803 + 1 x = 1.290993803 + 1 Combine like terms: 1.290993803 + 1 = 2.290993803 x = 2.290993803 Simplifying x = 2.290993803

Subproblem 2

x + -1 = -1.290993803 Simplifying x + -1 = -1.290993803 Reorder the terms: -1 + x = -1.290993803 Solving -1 + x = -1.290993803 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 = -1.290993803 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.290993803 + 1 x = -1.290993803 + 1 Combine like terms: -1.290993803 + 1 = -0.290993803 x = -0.290993803 Simplifying x = -0.290993803

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.290993803, -0.290993803}

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