.120582-1.80x-x^2=0

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Solution for .120582-1.80x-x^2=0 equation:


Simplifying
0.120582 + -1.80x + -1x2 = 0

Solving
0.120582 + -1.80x + -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'.
-0.120582 + 1.8x + x2 = 0

Move the constant term to the right:

Add '0.120582' to each side of the equation.
-0.120582 + 1.8x + 0.120582 + x2 = 0 + 0.120582

Reorder the terms:
-0.120582 + 0.120582 + 1.8x + x2 = 0 + 0.120582

Combine like terms: -0.120582 + 0.120582 = 0.000000
0.000000 + 1.8x + x2 = 0 + 0.120582
1.8x + x2 = 0 + 0.120582

Combine like terms: 0 + 0.120582 = 0.120582
1.8x + x2 = 0.120582

The x term is 1.8x.  Take half its coefficient (0.9).
Square it (0.81) and add it to both sides.

Add '0.81' to each side of the equation.
1.8x + 0.81 + x2 = 0.120582 + 0.81

Reorder the terms:
0.81 + 1.8x + x2 = 0.120582 + 0.81

Combine like terms: 0.120582 + 0.81 = 0.930582
0.81 + 1.8x + x2 = 0.930582

Factor a perfect square on the left side:
(x + 0.9)(x + 0.9) = 0.930582

Calculate the square root of the right side: 0.964666782

Break this problem into two subproblems by setting 
(x + 0.9) equal to 0.964666782 and -0.964666782.

Subproblem 1

x + 0.9 = 0.964666782 Simplifying x + 0.9 = 0.964666782 Reorder the terms: 0.9 + x = 0.964666782 Solving 0.9 + x = 0.964666782 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.9' to each side of the equation. 0.9 + -0.9 + x = 0.964666782 + -0.9 Combine like terms: 0.9 + -0.9 = 0.0 0.0 + x = 0.964666782 + -0.9 x = 0.964666782 + -0.9 Combine like terms: 0.964666782 + -0.9 = 0.064666782 x = 0.064666782 Simplifying x = 0.064666782

Subproblem 2

x + 0.9 = -0.964666782 Simplifying x + 0.9 = -0.964666782 Reorder the terms: 0.9 + x = -0.964666782 Solving 0.9 + x = -0.964666782 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.9' to each side of the equation. 0.9 + -0.9 + x = -0.964666782 + -0.9 Combine like terms: 0.9 + -0.9 = 0.0 0.0 + x = -0.964666782 + -0.9 x = -0.964666782 + -0.9 Combine like terms: -0.964666782 + -0.9 = -1.864666782 x = -1.864666782 Simplifying x = -1.864666782

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.064666782, -1.864666782}

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