0=x+x^2-146

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Solution for 0=x+x^2-146 equation:


Simplifying
0 = x + x2 + -146

Reorder the terms:
0 = -146 + x + x2

Solving
0 = -146 + x + x2

Solving for variable 'x'.

Combine like terms: 0 + 146 = 146
146 + -1x + -1x2 = -146 + x + x2 + 146 + -1x + -1x2

Reorder the terms:
146 + -1x + -1x2 = -146 + 146 + x + -1x + x2 + -1x2

Combine like terms: -146 + 146 = 0
146 + -1x + -1x2 = 0 + x + -1x + x2 + -1x2
146 + -1x + -1x2 = x + -1x + x2 + -1x2

Combine like terms: x + -1x = 0
146 + -1x + -1x2 = 0 + x2 + -1x2
146 + -1x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
146 + -1x + -1x2 = 0

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

Divide each side by '-1'.
-146 + x + x2 = 0

Move the constant term to the right:

Add '146' to each side of the equation.
-146 + x + 146 + x2 = 0 + 146

Reorder the terms:
-146 + 146 + x + x2 = 0 + 146

Combine like terms: -146 + 146 = 0
0 + x + x2 = 0 + 146
x + x2 = 0 + 146

Combine like terms: 0 + 146 = 146
x + x2 = 146

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 = 146 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 146 + 0.25

Combine like terms: 146 + 0.25 = 146.25
1.25 + x2 = 146.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 146.25

Calculate the square root of the right side: 12.093386622

Break this problem into two subproblems by setting 
(x + 0.5) equal to 12.093386622 and -12.093386622.

Subproblem 1

x + 0.5 = 12.093386622 Simplifying x + 0.5 = 12.093386622 Reorder the terms: 0.5 + x = 12.093386622 Solving 0.5 + x = 12.093386622 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 = 12.093386622 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 12.093386622 + -0.5 x = 12.093386622 + -0.5 Combine like terms: 12.093386622 + -0.5 = 11.593386622 x = 11.593386622 Simplifying x = 11.593386622

Subproblem 2

x + 0.5 = -12.093386622 Simplifying x + 0.5 = -12.093386622 Reorder the terms: 0.5 + x = -12.093386622 Solving 0.5 + x = -12.093386622 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 = -12.093386622 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -12.093386622 + -0.5 x = -12.093386622 + -0.5 Combine like terms: -12.093386622 + -0.5 = -12.593386622 x = -12.593386622 Simplifying x = -12.593386622

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.593386622, -12.593386622}

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