x^2+x=2208

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Solution for x^2+x=2208 equation:


Simplifying
x2 + x = 2208

Reorder the terms:
x + x2 = 2208

Solving
x + x2 = 2208

Solving for variable 'x'.

Reorder the terms:
-2208 + x + x2 = 2208 + -2208

Combine like terms: 2208 + -2208 = 0
-2208 + x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '2208' to each side of the equation.
-2208 + x + 2208 + x2 = 0 + 2208

Reorder the terms:
-2208 + 2208 + x + x2 = 0 + 2208

Combine like terms: -2208 + 2208 = 0
0 + x + x2 = 0 + 2208
x + x2 = 0 + 2208

Combine like terms: 0 + 2208 = 2208
x + x2 = 2208

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 = 2208 + 0.25

Reorder the terms:
0.25 + x + x2 = 2208 + 0.25

Combine like terms: 2208 + 0.25 = 2208.25
0.25 + x + x2 = 2208.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 2208.25

Calculate the square root of the right side: 46.992020599

Break this problem into two subproblems by setting 
(x + 0.5) equal to 46.992020599 and -46.992020599.

Subproblem 1

x + 0.5 = 46.992020599 Simplifying x + 0.5 = 46.992020599 Reorder the terms: 0.5 + x = 46.992020599 Solving 0.5 + x = 46.992020599 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 = 46.992020599 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 46.992020599 + -0.5 x = 46.992020599 + -0.5 Combine like terms: 46.992020599 + -0.5 = 46.492020599 x = 46.492020599 Simplifying x = 46.492020599

Subproblem 2

x + 0.5 = -46.992020599 Simplifying x + 0.5 = -46.992020599 Reorder the terms: 0.5 + x = -46.992020599 Solving 0.5 + x = -46.992020599 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 = -46.992020599 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -46.992020599 + -0.5 x = -46.992020599 + -0.5 Combine like terms: -46.992020599 + -0.5 = -47.492020599 x = -47.492020599 Simplifying x = -47.492020599

Solution

The solution to the problem is based on the solutions from the subproblems. x = {46.492020599, -47.492020599}

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