.175-x-x^2=0

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Solution for .175-x-x^2=0 equation:


Simplifying
0.175 + -1x + -1x2 = 0

Solving
0.175 + -1x + -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'.
-0.175 + x + x2 = 0

Move the constant term to the right:

Add '0.175' to each side of the equation.
-0.175 + x + 0.175 + x2 = 0 + 0.175

Reorder the terms:
-0.175 + 0.175 + x + x2 = 0 + 0.175

Combine like terms: -0.175 + 0.175 = 0.000
0.000 + x + x2 = 0 + 0.175
x + x2 = 0 + 0.175

Combine like terms: 0 + 0.175 = 0.175
x + x2 = 0.175

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.
 + 0.25 + x2 = 0.175 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 0.175 + 0.25

Combine like terms: 0.175 + 0.25 = 0.425
1.25 + x2 = 0.425

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 0.425

Calculate the square root of the right side: 0.651920241

Break this problem into two subproblems by setting 
(x + 0.5) equal to 0.651920241 and -0.651920241.

Subproblem 1

x + 0.5 = 0.651920241 Simplifying x + 0.5 = 0.651920241 Reorder the terms: 0.5 + x = 0.651920241 Solving 0.5 + x = 0.651920241 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 = 0.651920241 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.651920241 + -0.5 x = 0.651920241 + -0.5 Combine like terms: 0.651920241 + -0.5 = 0.151920241 x = 0.151920241 Simplifying x = 0.151920241

Subproblem 2

x + 0.5 = -0.651920241 Simplifying x + 0.5 = -0.651920241 Reorder the terms: 0.5 + x = -0.651920241 Solving 0.5 + x = -0.651920241 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 = -0.651920241 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.651920241 + -0.5 x = -0.651920241 + -0.5 Combine like terms: -0.651920241 + -0.5 = -1.151920241 x = -1.151920241 Simplifying x = -1.151920241

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.151920241, -1.151920241}

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