11x+x^2=30.5

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Solution for 11x+x^2=30.5 equation:


Simplifying
11x + x2 = 30.5

Solving
11x + x2 = 30.5

Solving for variable 'x'.

Reorder the terms:
-30.5 + 11x + x2 = 30.5 + -30.5

Combine like terms: 30.5 + -30.5 = 0.0
-30.5 + 11x + x2 = 0.0

Begin completing the square.

Move the constant term to the right:

Add '30.5' to each side of the equation.
-30.5 + 11x + 30.5 + x2 = 0.0 + 30.5

Reorder the terms:
-30.5 + 30.5 + 11x + x2 = 0.0 + 30.5

Combine like terms: -30.5 + 30.5 = 0.0
0.0 + 11x + x2 = 0.0 + 30.5
11x + x2 = 0.0 + 30.5

Combine like terms: 0.0 + 30.5 = 30.5
11x + x2 = 30.5

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 = 30.5 + 30.25

Reorder the terms:
30.25 + 11x + x2 = 30.5 + 30.25

Combine like terms: 30.5 + 30.25 = 60.75
30.25 + 11x + x2 = 60.75

Factor a perfect square on the left side:
(x + 5.5)(x + 5.5) = 60.75

Calculate the square root of the right side: 7.794228634

Break this problem into two subproblems by setting 
(x + 5.5) equal to 7.794228634 and -7.794228634.

Subproblem 1

x + 5.5 = 7.794228634 Simplifying x + 5.5 = 7.794228634 Reorder the terms: 5.5 + x = 7.794228634 Solving 5.5 + x = 7.794228634 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 = 7.794228634 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = 7.794228634 + -5.5 x = 7.794228634 + -5.5 Combine like terms: 7.794228634 + -5.5 = 2.294228634 x = 2.294228634 Simplifying x = 2.294228634

Subproblem 2

x + 5.5 = -7.794228634 Simplifying x + 5.5 = -7.794228634 Reorder the terms: 5.5 + x = -7.794228634 Solving 5.5 + x = -7.794228634 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 = -7.794228634 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = -7.794228634 + -5.5 x = -7.794228634 + -5.5 Combine like terms: -7.794228634 + -5.5 = -13.294228634 x = -13.294228634 Simplifying x = -13.294228634

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.294228634, -13.294228634}

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