2x^2+.44x-.10=0

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Solution for 2x^2+.44x-.10=0 equation:


Simplifying
2x2 + 0.44x + -0.10 = 0

Reorder the terms:
-0.10 + 0.44x + 2x2 = 0

Solving
-0.10 + 0.44x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-0.05 + 0.22x + x2 = 0

Move the constant term to the right:

Add '0.05' to each side of the equation.
-0.05 + 0.22x + 0.05 + x2 = 0 + 0.05

Reorder the terms:
-0.05 + 0.05 + 0.22x + x2 = 0 + 0.05

Combine like terms: -0.05 + 0.05 = 0.00
0.00 + 0.22x + x2 = 0 + 0.05
0.22x + x2 = 0 + 0.05

Combine like terms: 0 + 0.05 = 0.05
0.22x + x2 = 0.05

The x term is 0.22x.  Take half its coefficient (0.11).
Square it (0.0121) and add it to both sides.

Add '0.0121' to each side of the equation.
0.22x + 0.0121 + x2 = 0.05 + 0.0121

Reorder the terms:
0.0121 + 0.22x + x2 = 0.05 + 0.0121

Combine like terms: 0.05 + 0.0121 = 0.0621
0.0121 + 0.22x + x2 = 0.0621

Factor a perfect square on the left side:
(x + 0.11)(x + 0.11) = 0.0621

Calculate the square root of the right side: 0.249198716

Break this problem into two subproblems by setting 
(x + 0.11) equal to 0.249198716 and -0.249198716.

Subproblem 1

x + 0.11 = 0.249198716 Simplifying x + 0.11 = 0.249198716 Reorder the terms: 0.11 + x = 0.249198716 Solving 0.11 + x = 0.249198716 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.11' to each side of the equation. 0.11 + -0.11 + x = 0.249198716 + -0.11 Combine like terms: 0.11 + -0.11 = 0.00 0.00 + x = 0.249198716 + -0.11 x = 0.249198716 + -0.11 Combine like terms: 0.249198716 + -0.11 = 0.139198716 x = 0.139198716 Simplifying x = 0.139198716

Subproblem 2

x + 0.11 = -0.249198716 Simplifying x + 0.11 = -0.249198716 Reorder the terms: 0.11 + x = -0.249198716 Solving 0.11 + x = -0.249198716 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.11' to each side of the equation. 0.11 + -0.11 + x = -0.249198716 + -0.11 Combine like terms: 0.11 + -0.11 = 0.00 0.00 + x = -0.249198716 + -0.11 x = -0.249198716 + -0.11 Combine like terms: -0.249198716 + -0.11 = -0.359198716 x = -0.359198716 Simplifying x = -0.359198716

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.139198716, -0.359198716}

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