x^2+x+0=520

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Solution for x^2+x+0=520 equation:


Simplifying
x2 + x + 0 = 520

Reorder the terms:
0 + x + x2 = 520
Remove the zero:
x + x2 = 520

Solving
x + x2 = 520

Solving for variable 'x'.

Reorder the terms:
-520 + x + x2 = 520 + -520

Combine like terms: 520 + -520 = 0
-520 + x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '520' to each side of the equation.
-520 + x + 520 + x2 = 0 + 520

Reorder the terms:
-520 + 520 + x + x2 = 0 + 520

Combine like terms: -520 + 520 = 0
0 + x + x2 = 0 + 520
x + x2 = 0 + 520

Combine like terms: 0 + 520 = 520
x + x2 = 520

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 = 520 + 0.25

Reorder the terms:
0.25 + x + x2 = 520 + 0.25

Combine like terms: 520 + 0.25 = 520.25
0.25 + x + x2 = 520.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 520.25

Calculate the square root of the right side: 22.808989456

Break this problem into two subproblems by setting 
(x + 0.5) equal to 22.808989456 and -22.808989456.

Subproblem 1

x + 0.5 = 22.808989456 Simplifying x + 0.5 = 22.808989456 Reorder the terms: 0.5 + x = 22.808989456 Solving 0.5 + x = 22.808989456 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 = 22.808989456 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 22.808989456 + -0.5 x = 22.808989456 + -0.5 Combine like terms: 22.808989456 + -0.5 = 22.308989456 x = 22.308989456 Simplifying x = 22.308989456

Subproblem 2

x + 0.5 = -22.808989456 Simplifying x + 0.5 = -22.808989456 Reorder the terms: 0.5 + x = -22.808989456 Solving 0.5 + x = -22.808989456 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 = -22.808989456 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -22.808989456 + -0.5 x = -22.808989456 + -0.5 Combine like terms: -22.808989456 + -0.5 = -23.308989456 x = -23.308989456 Simplifying x = -23.308989456

Solution

The solution to the problem is based on the solutions from the subproblems. x = {22.308989456, -23.308989456}

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