-11x^2+12x+6=0

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Solution for -11x^2+12x+6=0 equation:


Simplifying
-11x2 + 12x + 6 = 0

Reorder the terms:
6 + 12x + -11x2 = 0

Solving
6 + 12x + -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'.
-0.5454545455 + -1.090909091x + x2 = 0

Move the constant term to the right:

Add '0.5454545455' to each side of the equation.
-0.5454545455 + -1.090909091x + 0.5454545455 + x2 = 0 + 0.5454545455

Reorder the terms:
-0.5454545455 + 0.5454545455 + -1.090909091x + x2 = 0 + 0.5454545455

Combine like terms: -0.5454545455 + 0.5454545455 = 0.0000000000
0.0000000000 + -1.090909091x + x2 = 0 + 0.5454545455
-1.090909091x + x2 = 0 + 0.5454545455

Combine like terms: 0 + 0.5454545455 = 0.5454545455
-1.090909091x + x2 = 0.5454545455

The x term is -1.090909091x.  Take half its coefficient (-0.5454545455).
Square it (0.2975206612) and add it to both sides.

Add '0.2975206612' to each side of the equation.
-1.090909091x + 0.2975206612 + x2 = 0.5454545455 + 0.2975206612

Reorder the terms:
0.2975206612 + -1.090909091x + x2 = 0.5454545455 + 0.2975206612

Combine like terms: 0.5454545455 + 0.2975206612 = 0.8429752067
0.2975206612 + -1.090909091x + x2 = 0.8429752067

Factor a perfect square on the left side:
(x + -0.5454545455)(x + -0.5454545455) = 0.8429752067

Calculate the square root of the right side: 0.918136813

Break this problem into two subproblems by setting 
(x + -0.5454545455) equal to 0.918136813 and -0.918136813.

Subproblem 1

x + -0.5454545455 = 0.918136813 Simplifying x + -0.5454545455 = 0.918136813 Reorder the terms: -0.5454545455 + x = 0.918136813 Solving -0.5454545455 + x = 0.918136813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5454545455' to each side of the equation. -0.5454545455 + 0.5454545455 + x = 0.918136813 + 0.5454545455 Combine like terms: -0.5454545455 + 0.5454545455 = 0.0000000000 0.0000000000 + x = 0.918136813 + 0.5454545455 x = 0.918136813 + 0.5454545455 Combine like terms: 0.918136813 + 0.5454545455 = 1.4635913585 x = 1.4635913585 Simplifying x = 1.4635913585

Subproblem 2

x + -0.5454545455 = -0.918136813 Simplifying x + -0.5454545455 = -0.918136813 Reorder the terms: -0.5454545455 + x = -0.918136813 Solving -0.5454545455 + x = -0.918136813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5454545455' to each side of the equation. -0.5454545455 + 0.5454545455 + x = -0.918136813 + 0.5454545455 Combine like terms: -0.5454545455 + 0.5454545455 = 0.0000000000 0.0000000000 + x = -0.918136813 + 0.5454545455 x = -0.918136813 + 0.5454545455 Combine like terms: -0.918136813 + 0.5454545455 = -0.3726822675 x = -0.3726822675 Simplifying x = -0.3726822675

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.4635913585, -0.3726822675}

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