0=x^2+0.0129x-0.00404

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Solution for 0=x^2+0.0129x-0.00404 equation:


Simplifying
0 = x2 + 0.0129x + -0.00404

Reorder the terms:
0 = -0.00404 + 0.0129x + x2

Solving
0 = -0.00404 + 0.0129x + x2

Solving for variable 'x'.

Combine like terms: 0 + 0.00404 = 0.00404
0.00404 + -0.0129x + -1x2 = -0.00404 + 0.0129x + x2 + 0.00404 + -0.0129x + -1x2

Reorder the terms:
0.00404 + -0.0129x + -1x2 = -0.00404 + 0.00404 + 0.0129x + -0.0129x + x2 + -1x2

Combine like terms: -0.00404 + 0.00404 = 0.00000
0.00404 + -0.0129x + -1x2 = 0.00000 + 0.0129x + -0.0129x + x2 + -1x2
0.00404 + -0.0129x + -1x2 = 0.0129x + -0.0129x + x2 + -1x2

Combine like terms: 0.0129x + -0.0129x = 0.0000
0.00404 + -0.0129x + -1x2 = 0.0000 + x2 + -1x2
0.00404 + -0.0129x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
0.00404 + -0.0129x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-0.00404 + 0.0129x + x2 = 0

Move the constant term to the right:

Add '0.00404' to each side of the equation.
-0.00404 + 0.0129x + 0.00404 + x2 = 0 + 0.00404

Reorder the terms:
-0.00404 + 0.00404 + 0.0129x + x2 = 0 + 0.00404

Combine like terms: -0.00404 + 0.00404 = 0.00000
0.00000 + 0.0129x + x2 = 0 + 0.00404
0.0129x + x2 = 0 + 0.00404

Combine like terms: 0 + 0.00404 = 0.00404
0.0129x + x2 = 0.00404

The x term is 0.0129x.  Take half its coefficient (0.00645).
Square it (0.0000416025) and add it to both sides.

Add '0.0000416025' to each side of the equation.
0.0129x + 0.0000416025 + x2 = 0.00404 + 0.0000416025

Reorder the terms:
0.0000416025 + 0.0129x + x2 = 0.00404 + 0.0000416025

Combine like terms: 0.00404 + 0.0000416025 = 0.0040816025
0.0000416025 + 0.0129x + x2 = 0.0040816025

Factor a perfect square on the left side:
(x + 0.00645)(x + 0.00645) = 0.0040816025

Calculate the square root of the right side: 0.063887421

Break this problem into two subproblems by setting 
(x + 0.00645) equal to 0.063887421 and -0.063887421.

Subproblem 1

x + 0.00645 = 0.063887421 Simplifying x + 0.00645 = 0.063887421 Reorder the terms: 0.00645 + x = 0.063887421 Solving 0.00645 + x = 0.063887421 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.00645' to each side of the equation. 0.00645 + -0.00645 + x = 0.063887421 + -0.00645 Combine like terms: 0.00645 + -0.00645 = 0.00000 0.00000 + x = 0.063887421 + -0.00645 x = 0.063887421 + -0.00645 Combine like terms: 0.063887421 + -0.00645 = 0.057437421 x = 0.057437421 Simplifying x = 0.057437421

Subproblem 2

x + 0.00645 = -0.063887421 Simplifying x + 0.00645 = -0.063887421 Reorder the terms: 0.00645 + x = -0.063887421 Solving 0.00645 + x = -0.063887421 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.00645' to each side of the equation. 0.00645 + -0.00645 + x = -0.063887421 + -0.00645 Combine like terms: 0.00645 + -0.00645 = 0.00000 0.00000 + x = -0.063887421 + -0.00645 x = -0.063887421 + -0.00645 Combine like terms: -0.063887421 + -0.00645 = -0.070337421 x = -0.070337421 Simplifying x = -0.070337421

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.057437421, -0.070337421}

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