x^2+0.004x-0.000457=0

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Solution for x^2+0.004x-0.000457=0 equation:


Simplifying
x2 + 0.004x + -0.000457 = 0

Reorder the terms:
-0.000457 + 0.004x + x2 = 0

Solving
-0.000457 + 0.004x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '0.000457' to each side of the equation.
-0.000457 + 0.004x + 0.000457 + x2 = 0 + 0.000457

Reorder the terms:
-0.000457 + 0.000457 + 0.004x + x2 = 0 + 0.000457

Combine like terms: -0.000457 + 0.000457 = 0.000000
0.000000 + 0.004x + x2 = 0 + 0.000457
0.004x + x2 = 0 + 0.000457

Combine like terms: 0 + 0.000457 = 0.000457
0.004x + x2 = 0.000457

The x term is 0.004x.  Take half its coefficient (0.002).
Square it (0.000004) and add it to both sides.

Add '0.000004' to each side of the equation.
0.004x + 0.000004 + x2 = 0.000457 + 0.000004

Reorder the terms:
0.000004 + 0.004x + x2 = 0.000457 + 0.000004

Combine like terms: 0.000457 + 0.000004 = 0.000461
0.000004 + 0.004x + x2 = 0.000461

Factor a perfect square on the left side:
(x + 0.002)(x + 0.002) = 0.000461

Calculate the square root of the right side: 0.021470911

Break this problem into two subproblems by setting 
(x + 0.002) equal to 0.021470911 and -0.021470911.

Subproblem 1

x + 0.002 = 0.021470911 Simplifying x + 0.002 = 0.021470911 Reorder the terms: 0.002 + x = 0.021470911 Solving 0.002 + x = 0.021470911 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.002' to each side of the equation. 0.002 + -0.002 + x = 0.021470911 + -0.002 Combine like terms: 0.002 + -0.002 = 0.000 0.000 + x = 0.021470911 + -0.002 x = 0.021470911 + -0.002 Combine like terms: 0.021470911 + -0.002 = 0.019470911 x = 0.019470911 Simplifying x = 0.019470911

Subproblem 2

x + 0.002 = -0.021470911 Simplifying x + 0.002 = -0.021470911 Reorder the terms: 0.002 + x = -0.021470911 Solving 0.002 + x = -0.021470911 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.002' to each side of the equation. 0.002 + -0.002 + x = -0.021470911 + -0.002 Combine like terms: 0.002 + -0.002 = 0.000 0.000 + x = -0.021470911 + -0.002 x = -0.021470911 + -0.002 Combine like terms: -0.021470911 + -0.002 = -0.023470911 x = -0.023470911 Simplifying x = -0.023470911

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.019470911, -0.023470911}

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