(.1-x)(.0000833)=x^2

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Solution for (.1-x)(.0000833)=x^2 equation:


Simplifying
(0.1 + -1x)(0.0000833) = x2

Reorder the terms for easier multiplication:
0.0000833(0.1 + -1x) = x2
(0.1 * 0.0000833 + -1x * 0.0000833) = x2
(0.00000833 + -0.0000833x) = x2

Solving
0.00000833 + -0.0000833x = x2

Solving for variable 'x'.

Combine like terms: x2 + -1x2 = 0
0.00000833 + -0.0000833x + -1x2 = 0

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

Divide each side by '-1'.
-0.00000833 + 0.0000833x + x2 = 0

Move the constant term to the right:

Add '0.00000833' to each side of the equation.
-0.00000833 + 0.0000833x + 0.00000833 + x2 = 0 + 0.00000833

Reorder the terms:
-0.00000833 + 0.00000833 + 0.0000833x + x2 = 0 + 0.00000833

Combine like terms: -0.00000833 + 0.00000833 = 0.00000000
0.00000000 + 0.0000833x + x2 = 0 + 0.00000833
0.0000833x + x2 = 0 + 0.00000833

Combine like terms: 0 + 0.00000833 = 0.00000833
0.0000833x + x2 = 0.00000833

The x term is 0.0000833x.  Take half its coefficient (0.00004165).
Square it (0.0000000017347225) and add it to both sides.

Add '0.0000000017347225' to each side of the equation.
0.0000833x + 0.0000000017347225 + x2 = 0.00000833 + 0.0000000017347225

Reorder the terms:
0.0000000017347225 + 0.0000833x + x2 = 0.00000833 + 0.0000000017347225

Combine like terms: 0.00000833 + 0.0000000017347225 = 0.0000083317347225
0.0000000017347225 + 0.0000833x + x2 = 0.0000083317347225

Factor a perfect square on the left side:
(x + 0.00004165)(x + 0.00004165) = 0.0000083317347225

Calculate the square root of the right side: 0.002886474

Break this problem into two subproblems by setting 
(x + 0.00004165) equal to 0.002886474 and -0.002886474.

Subproblem 1

x + 0.00004165 = 0.002886474 Simplifying x + 0.00004165 = 0.002886474 Reorder the terms: 0.00004165 + x = 0.002886474 Solving 0.00004165 + x = 0.002886474 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.00004165' to each side of the equation. 0.00004165 + -0.00004165 + x = 0.002886474 + -0.00004165 Combine like terms: 0.00004165 + -0.00004165 = 0.00000000 0.00000000 + x = 0.002886474 + -0.00004165 x = 0.002886474 + -0.00004165 Combine like terms: 0.002886474 + -0.00004165 = 0.002844824 x = 0.002844824 Simplifying x = 0.002844824

Subproblem 2

x + 0.00004165 = -0.002886474 Simplifying x + 0.00004165 = -0.002886474 Reorder the terms: 0.00004165 + x = -0.002886474 Solving 0.00004165 + x = -0.002886474 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.00004165' to each side of the equation. 0.00004165 + -0.00004165 + x = -0.002886474 + -0.00004165 Combine like terms: 0.00004165 + -0.00004165 = 0.00000000 0.00000000 + x = -0.002886474 + -0.00004165 x = -0.002886474 + -0.00004165 Combine like terms: -0.002886474 + -0.00004165 = -0.002928124 x = -0.002928124 Simplifying x = -0.002928124

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.002844824, -0.002928124}

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