x-x^2=0.19

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Solution for x-x^2=0.19 equation:


Simplifying
x + -1x2 = 0.19

Solving
x + -1x2 = 0.19

Solving for variable 'x'.

Reorder the terms:
-0.19 + x + -1x2 = 0.19 + -0.19

Combine like terms: 0.19 + -0.19 = 0.00
-0.19 + x + -1x2 = 0.00

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

Divide each side by '-1'.
0.19 + -1x + x2 = 0.00

Move the constant term to the right:

Add '-0.19' to each side of the equation.
0.19 + -1x + -0.19 + x2 = 0.00 + -0.19

Reorder the terms:
0.19 + -0.19 + -1x + x2 = 0.00 + -0.19

Combine like terms: 0.19 + -0.19 = 0.00
0.00 + -1x + x2 = 0.00 + -0.19
-1x + x2 = 0.00 + -0.19

Combine like terms: 0.00 + -0.19 = -0.19
-1x + x2 = -0.19

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = -0.19 + 0.25

Reorder the terms:
0.25 + -1x + x2 = -0.19 + 0.25

Combine like terms: -0.19 + 0.25 = 0.06
0.25 + -1x + x2 = 0.06

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 0.06

Calculate the square root of the right side: 0.244948974

Break this problem into two subproblems by setting 
(x + 0.5) equal to 0.244948974 and -0.244948974.

Subproblem 1

x + 0.5 = 0.244948974 Simplifying x + 0.5 = 0.244948974 Reorder the terms: 0.5 + x = 0.244948974 Solving 0.5 + x = 0.244948974 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 0.244948974 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.244948974 + -0.5 x = 0.244948974 + -0.5 Combine like terms: 0.244948974 + -0.5 = -0.255051026 x = -0.255051026 Simplifying x = -0.255051026

Subproblem 2

x + 0.5 = -0.244948974 Simplifying x + 0.5 = -0.244948974 Reorder the terms: 0.5 + x = -0.244948974 Solving 0.5 + x = -0.244948974 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -0.244948974 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.244948974 + -0.5 x = -0.244948974 + -0.5 Combine like terms: -0.244948974 + -0.5 = -0.744948974 x = -0.744948974 Simplifying x = -0.744948974

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.255051026, -0.744948974}

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