125x-133=3x(2-1x)

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Solution for 125x-133=3x(2-1x) equation:


Simplifying
125x + -133 = 3x(2 + -1x)

Reorder the terms:
-133 + 125x = 3x(2 + -1x)
-133 + 125x = (2 * 3x + -1x * 3x)
-133 + 125x = (6x + -3x2)

Solving
-133 + 125x = 6x + -3x2

Solving for variable 'x'.

Combine like terms: 125x + -6x = 119x
-133 + 119x + 3x2 = 6x + -3x2 + -6x + 3x2

Reorder the terms:
-133 + 119x + 3x2 = 6x + -6x + -3x2 + 3x2

Combine like terms: 6x + -6x = 0
-133 + 119x + 3x2 = 0 + -3x2 + 3x2
-133 + 119x + 3x2 = -3x2 + 3x2

Combine like terms: -3x2 + 3x2 = 0
-133 + 119x + 3x2 = 0

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

Divide each side by '3'.
-44.33333333 + 39.66666667x + x2 = 0

Move the constant term to the right:

Add '44.33333333' to each side of the equation.
-44.33333333 + 39.66666667x + 44.33333333 + x2 = 0 + 44.33333333

Reorder the terms:
-44.33333333 + 44.33333333 + 39.66666667x + x2 = 0 + 44.33333333

Combine like terms: -44.33333333 + 44.33333333 = 0.00000000
0.00000000 + 39.66666667x + x2 = 0 + 44.33333333
39.66666667x + x2 = 0 + 44.33333333

Combine like terms: 0 + 44.33333333 = 44.33333333
39.66666667x + x2 = 44.33333333

The x term is 39.66666667x.  Take half its coefficient (19.83333334).
Square it (393.3611114) and add it to both sides.

Add '393.3611114' to each side of the equation.
39.66666667x + 393.3611114 + x2 = 44.33333333 + 393.3611114

Reorder the terms:
393.3611114 + 39.66666667x + x2 = 44.33333333 + 393.3611114

Combine like terms: 44.33333333 + 393.3611114 = 437.69444473
393.3611114 + 39.66666667x + x2 = 437.69444473

Factor a perfect square on the left side:
(x + 19.83333334)(x + 19.83333334) = 437.69444473

Calculate the square root of the right side: 20.921148265

Break this problem into two subproblems by setting 
(x + 19.83333334) equal to 20.921148265 and -20.921148265.

Subproblem 1

x + 19.83333334 = 20.921148265 Simplifying x + 19.83333334 = 20.921148265 Reorder the terms: 19.83333334 + x = 20.921148265 Solving 19.83333334 + x = 20.921148265 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-19.83333334' to each side of the equation. 19.83333334 + -19.83333334 + x = 20.921148265 + -19.83333334 Combine like terms: 19.83333334 + -19.83333334 = 0.00000000 0.00000000 + x = 20.921148265 + -19.83333334 x = 20.921148265 + -19.83333334 Combine like terms: 20.921148265 + -19.83333334 = 1.087814925 x = 1.087814925 Simplifying x = 1.087814925

Subproblem 2

x + 19.83333334 = -20.921148265 Simplifying x + 19.83333334 = -20.921148265 Reorder the terms: 19.83333334 + x = -20.921148265 Solving 19.83333334 + x = -20.921148265 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-19.83333334' to each side of the equation. 19.83333334 + -19.83333334 + x = -20.921148265 + -19.83333334 Combine like terms: 19.83333334 + -19.83333334 = 0.00000000 0.00000000 + x = -20.921148265 + -19.83333334 x = -20.921148265 + -19.83333334 Combine like terms: -20.921148265 + -19.83333334 = -40.754481605 x = -40.754481605 Simplifying x = -40.754481605

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.087814925, -40.754481605}

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