x*x+(.00416)x-0.00416=0

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Solution for x*x+(.00416)x-0.00416=0 equation:


Simplifying
x * x + (0.00416) * x + -0.00416 = 0

Multiply x * x
x2 + (0.00416) * x + -0.00416 = 0

Reorder the terms:
-0.00416 + 0.00416x + x2 = 0

Solving
-0.00416 + 0.00416x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '0.00416' to each side of the equation.
-0.00416 + 0.00416x + 0.00416 + x2 = 0 + 0.00416

Reorder the terms:
-0.00416 + 0.00416 + 0.00416x + x2 = 0 + 0.00416

Combine like terms: -0.00416 + 0.00416 = 0.00000
0.00000 + 0.00416x + x2 = 0 + 0.00416
0.00416x + x2 = 0 + 0.00416

Combine like terms: 0 + 0.00416 = 0.00416
0.00416x + x2 = 0.00416

The x term is 0.00416x.  Take half its coefficient (0.00208).
Square it (0.0000043264) and add it to both sides.

Add '0.0000043264' to each side of the equation.
0.00416x + 0.0000043264 + x2 = 0.00416 + 0.0000043264

Reorder the terms:
0.0000043264 + 0.00416x + x2 = 0.00416 + 0.0000043264

Combine like terms: 0.00416 + 0.0000043264 = 0.0041643264
0.0000043264 + 0.00416x + x2 = 0.0041643264

Factor a perfect square on the left side:
(x + 0.00208)(x + 0.00208) = 0.0041643264

Calculate the square root of the right side: 0.064531592

Break this problem into two subproblems by setting 
(x + 0.00208) equal to 0.064531592 and -0.064531592.

Subproblem 1

x + 0.00208 = 0.064531592 Simplifying x + 0.00208 = 0.064531592 Reorder the terms: 0.00208 + x = 0.064531592 Solving 0.00208 + x = 0.064531592 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.00208' to each side of the equation. 0.00208 + -0.00208 + x = 0.064531592 + -0.00208 Combine like terms: 0.00208 + -0.00208 = 0.00000 0.00000 + x = 0.064531592 + -0.00208 x = 0.064531592 + -0.00208 Combine like terms: 0.064531592 + -0.00208 = 0.062451592 x = 0.062451592 Simplifying x = 0.062451592

Subproblem 2

x + 0.00208 = -0.064531592 Simplifying x + 0.00208 = -0.064531592 Reorder the terms: 0.00208 + x = -0.064531592 Solving 0.00208 + x = -0.064531592 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.00208' to each side of the equation. 0.00208 + -0.00208 + x = -0.064531592 + -0.00208 Combine like terms: 0.00208 + -0.00208 = 0.00000 0.00000 + x = -0.064531592 + -0.00208 x = -0.064531592 + -0.00208 Combine like terms: -0.064531592 + -0.00208 = -0.066611592 x = -0.066611592 Simplifying x = -0.066611592

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.062451592, -0.066611592}

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