11x^2-32x-9=0

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Solution for 11x^2-32x-9=0 equation:


Simplifying
11x2 + -32x + -9 = 0

Reorder the terms:
-9 + -32x + 11x2 = 0

Solving
-9 + -32x + 11x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
11 the coefficient of the squared term: 

Divide each side by '11'.
-0.8181818182 + -2.909090909x + x2 = 0

Move the constant term to the right:

Add '0.8181818182' to each side of the equation.
-0.8181818182 + -2.909090909x + 0.8181818182 + x2 = 0 + 0.8181818182

Reorder the terms:
-0.8181818182 + 0.8181818182 + -2.909090909x + x2 = 0 + 0.8181818182

Combine like terms: -0.8181818182 + 0.8181818182 = 0.0000000000
0.0000000000 + -2.909090909x + x2 = 0 + 0.8181818182
-2.909090909x + x2 = 0 + 0.8181818182

Combine like terms: 0 + 0.8181818182 = 0.8181818182
-2.909090909x + x2 = 0.8181818182

The x term is -2.909090909x.  Take half its coefficient (-1.454545455).
Square it (2.115702481) and add it to both sides.

Add '2.115702481' to each side of the equation.
-2.909090909x + 2.115702481 + x2 = 0.8181818182 + 2.115702481

Reorder the terms:
2.115702481 + -2.909090909x + x2 = 0.8181818182 + 2.115702481

Combine like terms: 0.8181818182 + 2.115702481 = 2.9338842992
2.115702481 + -2.909090909x + x2 = 2.9338842992

Factor a perfect square on the left side:
(x + -1.454545455)(x + -1.454545455) = 2.9338842992

Calculate the square root of the right side: 1.712858517

Break this problem into two subproblems by setting 
(x + -1.454545455) equal to 1.712858517 and -1.712858517.

Subproblem 1

x + -1.454545455 = 1.712858517 Simplifying x + -1.454545455 = 1.712858517 Reorder the terms: -1.454545455 + x = 1.712858517 Solving -1.454545455 + x = 1.712858517 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.454545455' to each side of the equation. -1.454545455 + 1.454545455 + x = 1.712858517 + 1.454545455 Combine like terms: -1.454545455 + 1.454545455 = 0.000000000 0.000000000 + x = 1.712858517 + 1.454545455 x = 1.712858517 + 1.454545455 Combine like terms: 1.712858517 + 1.454545455 = 3.167403972 x = 3.167403972 Simplifying x = 3.167403972

Subproblem 2

x + -1.454545455 = -1.712858517 Simplifying x + -1.454545455 = -1.712858517 Reorder the terms: -1.454545455 + x = -1.712858517 Solving -1.454545455 + x = -1.712858517 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.454545455' to each side of the equation. -1.454545455 + 1.454545455 + x = -1.712858517 + 1.454545455 Combine like terms: -1.454545455 + 1.454545455 = 0.000000000 0.000000000 + x = -1.712858517 + 1.454545455 x = -1.712858517 + 1.454545455 Combine like terms: -1.712858517 + 1.454545455 = -0.258313062 x = -0.258313062 Simplifying x = -0.258313062

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.167403972, -0.258313062}

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