x+x^2=25.862

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Solution for x+x^2=25.862 equation:


Simplifying
x + x2 = 25.862

Solving
x + x2 = 25.862

Solving for variable 'x'.

Reorder the terms:
-25.862 + x + x2 = 25.862 + -25.862

Combine like terms: 25.862 + -25.862 = 0.000
-25.862 + x + x2 = 0.000

Begin completing the square.

Move the constant term to the right:

Add '25.862' to each side of the equation.
-25.862 + x + 25.862 + x2 = 0.000 + 25.862

Reorder the terms:
-25.862 + 25.862 + x + x2 = 0.000 + 25.862

Combine like terms: -25.862 + 25.862 = 0.000
0.000 + x + x2 = 0.000 + 25.862
x + x2 = 0.000 + 25.862

Combine like terms: 0.000 + 25.862 = 25.862
x + x2 = 25.862

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.
x + 0.25 + x2 = 25.862 + 0.25

Reorder the terms:
0.25 + x + x2 = 25.862 + 0.25

Combine like terms: 25.862 + 0.25 = 26.112
0.25 + x + x2 = 26.112

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 26.112

Calculate the square root of the right side: 5.109990215

Break this problem into two subproblems by setting 
(x + 0.5) equal to 5.109990215 and -5.109990215.

Subproblem 1

x + 0.5 = 5.109990215 Simplifying x + 0.5 = 5.109990215 Reorder the terms: 0.5 + x = 5.109990215 Solving 0.5 + x = 5.109990215 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 = 5.109990215 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 5.109990215 + -0.5 x = 5.109990215 + -0.5 Combine like terms: 5.109990215 + -0.5 = 4.609990215 x = 4.609990215 Simplifying x = 4.609990215

Subproblem 2

x + 0.5 = -5.109990215 Simplifying x + 0.5 = -5.109990215 Reorder the terms: 0.5 + x = -5.109990215 Solving 0.5 + x = -5.109990215 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 = -5.109990215 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -5.109990215 + -0.5 x = -5.109990215 + -0.5 Combine like terms: -5.109990215 + -0.5 = -5.609990215 x = -5.609990215 Simplifying x = -5.609990215

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.609990215, -5.609990215}

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