x^2+11x-33=0

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Solution for x^2+11x-33=0 equation:


Simplifying
x2 + 11x + -33 = 0

Reorder the terms:
-33 + 11x + x2 = 0

Solving
-33 + 11x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '33' to each side of the equation.
-33 + 11x + 33 + x2 = 0 + 33

Reorder the terms:
-33 + 33 + 11x + x2 = 0 + 33

Combine like terms: -33 + 33 = 0
0 + 11x + x2 = 0 + 33
11x + x2 = 0 + 33

Combine like terms: 0 + 33 = 33
11x + x2 = 33

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 = 33 + 30.25

Reorder the terms:
30.25 + 11x + x2 = 33 + 30.25

Combine like terms: 33 + 30.25 = 63.25
30.25 + 11x + x2 = 63.25

Factor a perfect square on the left side:
(x + 5.5)(x + 5.5) = 63.25

Calculate the square root of the right side: 7.95298686

Break this problem into two subproblems by setting 
(x + 5.5) equal to 7.95298686 and -7.95298686.

Subproblem 1

x + 5.5 = 7.95298686 Simplifying x + 5.5 = 7.95298686 Reorder the terms: 5.5 + x = 7.95298686 Solving 5.5 + x = 7.95298686 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 = 7.95298686 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = 7.95298686 + -5.5 x = 7.95298686 + -5.5 Combine like terms: 7.95298686 + -5.5 = 2.45298686 x = 2.45298686 Simplifying x = 2.45298686

Subproblem 2

x + 5.5 = -7.95298686 Simplifying x + 5.5 = -7.95298686 Reorder the terms: 5.5 + x = -7.95298686 Solving 5.5 + x = -7.95298686 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 = -7.95298686 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = -7.95298686 + -5.5 x = -7.95298686 + -5.5 Combine like terms: -7.95298686 + -5.5 = -13.45298686 x = -13.45298686 Simplifying x = -13.45298686

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.45298686, -13.45298686}

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