11x^2-6x-27=180

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Solution for 11x^2-6x-27=180 equation:


Simplifying
11x2 + -6x + -27 = 180

Reorder the terms:
-27 + -6x + 11x2 = 180

Solving
-27 + -6x + 11x2 = 180

Solving for variable 'x'.

Reorder the terms:
-27 + -180 + -6x + 11x2 = 180 + -180

Combine like terms: -27 + -180 = -207
-207 + -6x + 11x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-207 + -6x + 11x2 = 0

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

Divide each side by '11'.
-18.81818182 + -0.5454545455x + x2 = 0

Move the constant term to the right:

Add '18.81818182' to each side of the equation.
-18.81818182 + -0.5454545455x + 18.81818182 + x2 = 0 + 18.81818182

Reorder the terms:
-18.81818182 + 18.81818182 + -0.5454545455x + x2 = 0 + 18.81818182

Combine like terms: -18.81818182 + 18.81818182 = 0.00000000
0.00000000 + -0.5454545455x + x2 = 0 + 18.81818182
-0.5454545455x + x2 = 0 + 18.81818182

Combine like terms: 0 + 18.81818182 = 18.81818182
-0.5454545455x + x2 = 18.81818182

The x term is -0.5454545455x.  Take half its coefficient (-0.2727272728).
Square it (0.07438016533) and add it to both sides.

Add '0.07438016533' to each side of the equation.
-0.5454545455x + 0.07438016533 + x2 = 18.81818182 + 0.07438016533

Reorder the terms:
0.07438016533 + -0.5454545455x + x2 = 18.81818182 + 0.07438016533

Combine like terms: 18.81818182 + 0.07438016533 = 18.89256198533
0.07438016533 + -0.5454545455x + x2 = 18.89256198533

Factor a perfect square on the left side:
(x + -0.2727272728)(x + -0.2727272728) = 18.89256198533

Calculate the square root of the right side: 4.346557487

Break this problem into two subproblems by setting 
(x + -0.2727272728) equal to 4.346557487 and -4.346557487.

Subproblem 1

x + -0.2727272728 = 4.346557487 Simplifying x + -0.2727272728 = 4.346557487 Reorder the terms: -0.2727272728 + x = 4.346557487 Solving -0.2727272728 + x = 4.346557487 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2727272728' to each side of the equation. -0.2727272728 + 0.2727272728 + x = 4.346557487 + 0.2727272728 Combine like terms: -0.2727272728 + 0.2727272728 = 0.0000000000 0.0000000000 + x = 4.346557487 + 0.2727272728 x = 4.346557487 + 0.2727272728 Combine like terms: 4.346557487 + 0.2727272728 = 4.6192847598 x = 4.6192847598 Simplifying x = 4.6192847598

Subproblem 2

x + -0.2727272728 = -4.346557487 Simplifying x + -0.2727272728 = -4.346557487 Reorder the terms: -0.2727272728 + x = -4.346557487 Solving -0.2727272728 + x = -4.346557487 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2727272728' to each side of the equation. -0.2727272728 + 0.2727272728 + x = -4.346557487 + 0.2727272728 Combine like terms: -0.2727272728 + 0.2727272728 = 0.0000000000 0.0000000000 + x = -4.346557487 + 0.2727272728 x = -4.346557487 + 0.2727272728 Combine like terms: -4.346557487 + 0.2727272728 = -4.0738302142 x = -4.0738302142 Simplifying x = -4.0738302142

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.6192847598, -4.0738302142}

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