0.0015x^2-x+125=0

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Solution for 0.0015x^2-x+125=0 equation:


Simplifying
0.0015x2 + -1x + 125 = 0

Reorder the terms:
125 + -1x + 0.0015x2 = 0

Solving
125 + -1x + 0.0015x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
0.0015 the coefficient of the squared term: 

Divide each side by '0.0015'.
83333.33333 + -666.6666667x + x2 = 0

Move the constant term to the right:

Add '-83333.33333' to each side of the equation.
83333.33333 + -666.6666667x + -83333.33333 + x2 = 0 + -83333.33333

Reorder the terms:
83333.33333 + -83333.33333 + -666.6666667x + x2 = 0 + -83333.33333

Combine like terms: 83333.33333 + -83333.33333 = 0.00000
0.00000 + -666.6666667x + x2 = 0 + -83333.33333
-666.6666667x + x2 = 0 + -83333.33333

Combine like terms: 0 + -83333.33333 = -83333.33333
-666.6666667x + x2 = -83333.33333

The x term is -666.6666667x.  Take half its coefficient (-333.3333334).
Square it (111111.1112) and add it to both sides.

Add '111111.1112' to each side of the equation.
-666.6666667x + 111111.1112 + x2 = -83333.33333 + 111111.1112

Reorder the terms:
111111.1112 + -666.6666667x + x2 = -83333.33333 + 111111.1112

Combine like terms: -83333.33333 + 111111.1112 = 27777.77787
111111.1112 + -666.6666667x + x2 = 27777.77787

Factor a perfect square on the left side:
(x + -333.3333334)(x + -333.3333334) = 27777.77787

Calculate the square root of the right side: 166.666666943

Break this problem into two subproblems by setting 
(x + -333.3333334) equal to 166.666666943 and -166.666666943.

Subproblem 1

x + -333.3333334 = 166.666666943 Simplifying x + -333.3333334 = 166.666666943 Reorder the terms: -333.3333334 + x = 166.666666943 Solving -333.3333334 + x = 166.666666943 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '333.3333334' to each side of the equation. -333.3333334 + 333.3333334 + x = 166.666666943 + 333.3333334 Combine like terms: -333.3333334 + 333.3333334 = 0.0000000 0.0000000 + x = 166.666666943 + 333.3333334 x = 166.666666943 + 333.3333334 Combine like terms: 166.666666943 + 333.3333334 = 500.000000343 x = 500.000000343 Simplifying x = 500.000000343

Subproblem 2

x + -333.3333334 = -166.666666943 Simplifying x + -333.3333334 = -166.666666943 Reorder the terms: -333.3333334 + x = -166.666666943 Solving -333.3333334 + x = -166.666666943 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '333.3333334' to each side of the equation. -333.3333334 + 333.3333334 + x = -166.666666943 + 333.3333334 Combine like terms: -333.3333334 + 333.3333334 = 0.0000000 0.0000000 + x = -166.666666943 + 333.3333334 x = -166.666666943 + 333.3333334 Combine like terms: -166.666666943 + 333.3333334 = 166.666666457 x = 166.666666457 Simplifying x = 166.666666457

Solution

The solution to the problem is based on the solutions from the subproblems. x = {500.000000343, 166.666666457}

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