x^2+x=553

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Solution for x^2+x=553 equation:


Simplifying
x2 + x = 553

Reorder the terms:
x + x2 = 553

Solving
x + x2 = 553

Solving for variable 'x'.

Reorder the terms:
-553 + x + x2 = 553 + -553

Combine like terms: 553 + -553 = 0
-553 + x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '553' to each side of the equation.
-553 + x + 553 + x2 = 0 + 553

Reorder the terms:
-553 + 553 + x + x2 = 0 + 553

Combine like terms: -553 + 553 = 0
0 + x + x2 = 0 + 553
x + x2 = 0 + 553

Combine like terms: 0 + 553 = 553
x + x2 = 553

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 = 553 + 0.25

Reorder the terms:
0.25 + x + x2 = 553 + 0.25

Combine like terms: 553 + 0.25 = 553.25
0.25 + x + x2 = 553.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 553.25

Calculate the square root of the right side: 23.521266973

Break this problem into two subproblems by setting 
(x + 0.5) equal to 23.521266973 and -23.521266973.

Subproblem 1

x + 0.5 = 23.521266973 Simplifying x + 0.5 = 23.521266973 Reorder the terms: 0.5 + x = 23.521266973 Solving 0.5 + x = 23.521266973 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 = 23.521266973 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 23.521266973 + -0.5 x = 23.521266973 + -0.5 Combine like terms: 23.521266973 + -0.5 = 23.021266973 x = 23.021266973 Simplifying x = 23.021266973

Subproblem 2

x + 0.5 = -23.521266973 Simplifying x + 0.5 = -23.521266973 Reorder the terms: 0.5 + x = -23.521266973 Solving 0.5 + x = -23.521266973 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 = -23.521266973 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -23.521266973 + -0.5 x = -23.521266973 + -0.5 Combine like terms: -23.521266973 + -0.5 = -24.021266973 x = -24.021266973 Simplifying x = -24.021266973

Solution

The solution to the problem is based on the solutions from the subproblems. x = {23.021266973, -24.021266973}

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