11x+x^2=144

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Solution for 11x+x^2=144 equation:


Simplifying
11x + x2 = 144

Solving
11x + x2 = 144

Solving for variable 'x'.

Reorder the terms:
-144 + 11x + x2 = 144 + -144

Combine like terms: 144 + -144 = 0
-144 + 11x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '144' to each side of the equation.
-144 + 11x + 144 + x2 = 0 + 144

Reorder the terms:
-144 + 144 + 11x + x2 = 0 + 144

Combine like terms: -144 + 144 = 0
0 + 11x + x2 = 0 + 144
11x + x2 = 0 + 144

Combine like terms: 0 + 144 = 144
11x + x2 = 144

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 = 144 + 30.25

Reorder the terms:
30.25 + 11x + x2 = 144 + 30.25

Combine like terms: 144 + 30.25 = 174.25
30.25 + 11x + x2 = 174.25

Factor a perfect square on the left side:
(x + 5.5)(x + 5.5) = 174.25

Calculate the square root of the right side: 13.200378782

Break this problem into two subproblems by setting 
(x + 5.5) equal to 13.200378782 and -13.200378782.

Subproblem 1

x + 5.5 = 13.200378782 Simplifying x + 5.5 = 13.200378782 Reorder the terms: 5.5 + x = 13.200378782 Solving 5.5 + x = 13.200378782 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 = 13.200378782 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = 13.200378782 + -5.5 x = 13.200378782 + -5.5 Combine like terms: 13.200378782 + -5.5 = 7.700378782 x = 7.700378782 Simplifying x = 7.700378782

Subproblem 2

x + 5.5 = -13.200378782 Simplifying x + 5.5 = -13.200378782 Reorder the terms: 5.5 + x = -13.200378782 Solving 5.5 + x = -13.200378782 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 = -13.200378782 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = -13.200378782 + -5.5 x = -13.200378782 + -5.5 Combine like terms: -13.200378782 + -5.5 = -18.700378782 x = -18.700378782 Simplifying x = -18.700378782

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.700378782, -18.700378782}

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