x^2+11x=250

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Solution for x^2+11x=250 equation:


Simplifying
x2 + 11x = 250

Reorder the terms:
11x + x2 = 250

Solving
11x + x2 = 250

Solving for variable 'x'.

Reorder the terms:
-250 + 11x + x2 = 250 + -250

Combine like terms: 250 + -250 = 0
-250 + 11x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '250' to each side of the equation.
-250 + 11x + 250 + x2 = 0 + 250

Reorder the terms:
-250 + 250 + 11x + x2 = 0 + 250

Combine like terms: -250 + 250 = 0
0 + 11x + x2 = 0 + 250
11x + x2 = 0 + 250

Combine like terms: 0 + 250 = 250
11x + x2 = 250

The x term is 11x.  Take half its coefficient (5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
11x + 30.25 + x2 = 250 + 30.25

Reorder the terms:
30.25 + 11x + x2 = 250 + 30.25

Combine like terms: 250 + 30.25 = 280.25
30.25 + 11x + x2 = 280.25

Factor a perfect square on the left side:
(x + 5.5)(x + 5.5) = 280.25

Calculate the square root of the right side: 16.740669043

Break this problem into two subproblems by setting 
(x + 5.5) equal to 16.740669043 and -16.740669043.

Subproblem 1

x + 5.5 = 16.740669043 Simplifying x + 5.5 = 16.740669043 Reorder the terms: 5.5 + x = 16.740669043 Solving 5.5 + x = 16.740669043 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + x = 16.740669043 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = 16.740669043 + -5.5 x = 16.740669043 + -5.5 Combine like terms: 16.740669043 + -5.5 = 11.240669043 x = 11.240669043 Simplifying x = 11.240669043

Subproblem 2

x + 5.5 = -16.740669043 Simplifying x + 5.5 = -16.740669043 Reorder the terms: 5.5 + x = -16.740669043 Solving 5.5 + x = -16.740669043 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + x = -16.740669043 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = -16.740669043 + -5.5 x = -16.740669043 + -5.5 Combine like terms: -16.740669043 + -5.5 = -22.240669043 x = -22.240669043 Simplifying x = -22.240669043

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.240669043, -22.240669043}

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