2x-(x*x)=.1

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Solution for 2x-(x*x)=.1 equation:


Simplifying
2x + -1(x * x) = 0.1

Multiply x * x
2x + -1(x2) = 0.1

Solving
2x + -1x2 = 0.1

Solving for variable 'x'.

Reorder the terms:
-0.1 + 2x + -1x2 = 0.1 + -0.1

Combine like terms: 0.1 + -0.1 = 0.0
-0.1 + 2x + -1x2 = 0.0

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

Divide each side by '-1'.
0.1 + -2x + x2 = 0.0

Move the constant term to the right:

Add '-0.1' to each side of the equation.
0.1 + -2x + -0.1 + x2 = 0.0 + -0.1

Reorder the terms:
0.1 + -0.1 + -2x + x2 = 0.0 + -0.1

Combine like terms: 0.1 + -0.1 = 0.0
0.0 + -2x + x2 = 0.0 + -0.1
-2x + x2 = 0.0 + -0.1

Combine like terms: 0.0 + -0.1 = -0.1
-2x + x2 = -0.1

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -0.1 + 1

Reorder the terms:
1 + -2x + x2 = -0.1 + 1

Combine like terms: -0.1 + 1 = 0.9
1 + -2x + x2 = 0.9

Factor a perfect square on the left side:
(x + -1)(x + -1) = 0.9

Calculate the square root of the right side: 0.948683298

Break this problem into two subproblems by setting 
(x + -1) equal to 0.948683298 and -0.948683298.

Subproblem 1

x + -1 = 0.948683298 Simplifying x + -1 = 0.948683298 Reorder the terms: -1 + x = 0.948683298 Solving -1 + x = 0.948683298 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 0.948683298 + 1 Combine like terms: -1 + 1 = 0 0 + x = 0.948683298 + 1 x = 0.948683298 + 1 Combine like terms: 0.948683298 + 1 = 1.948683298 x = 1.948683298 Simplifying x = 1.948683298

Subproblem 2

x + -1 = -0.948683298 Simplifying x + -1 = -0.948683298 Reorder the terms: -1 + x = -0.948683298 Solving -1 + x = -0.948683298 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -0.948683298 + 1 Combine like terms: -1 + 1 = 0 0 + x = -0.948683298 + 1 x = -0.948683298 + 1 Combine like terms: -0.948683298 + 1 = 0.051316702 x = 0.051316702 Simplifying x = 0.051316702

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.948683298, 0.051316702}

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