2x^2-.5x=.125

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Solution for 2x^2-.5x=.125 equation:


Simplifying
2x2 + -0.5x = 0.125

Reorder the terms:
-0.5x + 2x2 = 0.125

Solving
-0.5x + 2x2 = 0.125

Solving for variable 'x'.

Reorder the terms:
-0.125 + -0.5x + 2x2 = 0.125 + -0.125

Combine like terms: 0.125 + -0.125 = 0.000
-0.125 + -0.5x + 2x2 = 0.000

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

Divide each side by '2'.
-0.0625 + -0.25x + x2 = 0.000

Move the constant term to the right:

Add '0.0625' to each side of the equation.
-0.0625 + -0.25x + 0.0625 + x2 = 0.000 + 0.0625

Reorder the terms:
-0.0625 + 0.0625 + -0.25x + x2 = 0.000 + 0.0625

Combine like terms: -0.0625 + 0.0625 = 0.0000
0.0000 + -0.25x + x2 = 0.000 + 0.0625
-0.25x + x2 = 0.000 + 0.0625

Combine like terms: 0.000 + 0.0625 = 0.0625
-0.25x + x2 = 0.0625

The x term is -0.25x.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25x + 0.015625 + x2 = 0.0625 + 0.015625

Reorder the terms:
0.015625 + -0.25x + x2 = 0.0625 + 0.015625

Combine like terms: 0.0625 + 0.015625 = 0.078125
0.015625 + -0.25x + x2 = 0.078125

Factor a perfect square on the left side:
(x + -0.125)(x + -0.125) = 0.078125

Calculate the square root of the right side: 0.279508497

Break this problem into two subproblems by setting 
(x + -0.125) equal to 0.279508497 and -0.279508497.

Subproblem 1

x + -0.125 = 0.279508497 Simplifying x + -0.125 = 0.279508497 Reorder the terms: -0.125 + x = 0.279508497 Solving -0.125 + x = 0.279508497 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + x = 0.279508497 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + x = 0.279508497 + 0.125 x = 0.279508497 + 0.125 Combine like terms: 0.279508497 + 0.125 = 0.404508497 x = 0.404508497 Simplifying x = 0.404508497

Subproblem 2

x + -0.125 = -0.279508497 Simplifying x + -0.125 = -0.279508497 Reorder the terms: -0.125 + x = -0.279508497 Solving -0.125 + x = -0.279508497 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + x = -0.279508497 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + x = -0.279508497 + 0.125 x = -0.279508497 + 0.125 Combine like terms: -0.279508497 + 0.125 = -0.154508497 x = -0.154508497 Simplifying x = -0.154508497

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.404508497, -0.154508497}

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