11x+x^2=153

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Solution for 11x+x^2=153 equation:


Simplifying
11x + x2 = 153

Solving
11x + x2 = 153

Solving for variable 'x'.

Reorder the terms:
-153 + 11x + x2 = 153 + -153

Combine like terms: 153 + -153 = 0
-153 + 11x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '153' to each side of the equation.
-153 + 11x + 153 + x2 = 0 + 153

Reorder the terms:
-153 + 153 + 11x + x2 = 0 + 153

Combine like terms: -153 + 153 = 0
0 + 11x + x2 = 0 + 153
11x + x2 = 0 + 153

Combine like terms: 0 + 153 = 153
11x + x2 = 153

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 = 153 + 30.25

Reorder the terms:
30.25 + 11x + x2 = 153 + 30.25

Combine like terms: 153 + 30.25 = 183.25
30.25 + 11x + x2 = 183.25

Factor a perfect square on the left side:
(x + 5.5)(x + 5.5) = 183.25

Calculate the square root of the right side: 13.536986371

Break this problem into two subproblems by setting 
(x + 5.5) equal to 13.536986371 and -13.536986371.

Subproblem 1

x + 5.5 = 13.536986371 Simplifying x + 5.5 = 13.536986371 Reorder the terms: 5.5 + x = 13.536986371 Solving 5.5 + x = 13.536986371 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 = 13.536986371 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = 13.536986371 + -5.5 x = 13.536986371 + -5.5 Combine like terms: 13.536986371 + -5.5 = 8.036986371 x = 8.036986371 Simplifying x = 8.036986371

Subproblem 2

x + 5.5 = -13.536986371 Simplifying x + 5.5 = -13.536986371 Reorder the terms: 5.5 + x = -13.536986371 Solving 5.5 + x = -13.536986371 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 = -13.536986371 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = -13.536986371 + -5.5 x = -13.536986371 + -5.5 Combine like terms: -13.536986371 + -5.5 = -19.036986371 x = -19.036986371 Simplifying x = -19.036986371

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.036986371, -19.036986371}

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