-x^2-.18x+.045=0

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Solution for -x^2-.18x+.045=0 equation:


Simplifying
-1x2 + -0.18x + 0.045 = 0

Reorder the terms:
0.045 + -0.18x + -1x2 = 0

Solving
0.045 + -0.18x + -1x2 = 0

Solving for variable 'x'.

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

Divide each side by '-1'.
-0.045 + 0.18x + x2 = 0

Move the constant term to the right:

Add '0.045' to each side of the equation.
-0.045 + 0.18x + 0.045 + x2 = 0 + 0.045

Reorder the terms:
-0.045 + 0.045 + 0.18x + x2 = 0 + 0.045

Combine like terms: -0.045 + 0.045 = 0.000
0.000 + 0.18x + x2 = 0 + 0.045
0.18x + x2 = 0 + 0.045

Combine like terms: 0 + 0.045 = 0.045
0.18x + x2 = 0.045

The x term is 0.18x.  Take half its coefficient (0.09).
Square it (0.0081) and add it to both sides.

Add '0.0081' to each side of the equation.
0.18x + 0.0081 + x2 = 0.045 + 0.0081

Reorder the terms:
0.0081 + 0.18x + x2 = 0.045 + 0.0081

Combine like terms: 0.045 + 0.0081 = 0.0531
0.0081 + 0.18x + x2 = 0.0531

Factor a perfect square on the left side:
(x + 0.09)(x + 0.09) = 0.0531

Calculate the square root of the right side: 0.230434372

Break this problem into two subproblems by setting 
(x + 0.09) equal to 0.230434372 and -0.230434372.

Subproblem 1

x + 0.09 = 0.230434372 Simplifying x + 0.09 = 0.230434372 Reorder the terms: 0.09 + x = 0.230434372 Solving 0.09 + x = 0.230434372 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.09' to each side of the equation. 0.09 + -0.09 + x = 0.230434372 + -0.09 Combine like terms: 0.09 + -0.09 = 0.00 0.00 + x = 0.230434372 + -0.09 x = 0.230434372 + -0.09 Combine like terms: 0.230434372 + -0.09 = 0.140434372 x = 0.140434372 Simplifying x = 0.140434372

Subproblem 2

x + 0.09 = -0.230434372 Simplifying x + 0.09 = -0.230434372 Reorder the terms: 0.09 + x = -0.230434372 Solving 0.09 + x = -0.230434372 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.09' to each side of the equation. 0.09 + -0.09 + x = -0.230434372 + -0.09 Combine like terms: 0.09 + -0.09 = 0.00 0.00 + x = -0.230434372 + -0.09 x = -0.230434372 + -0.09 Combine like terms: -0.230434372 + -0.09 = -0.320434372 x = -0.320434372 Simplifying x = -0.320434372

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.140434372, -0.320434372}

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