11x^2-20=-6x

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Solution for 11x^2-20=-6x equation:


Simplifying
11x2 + -20 = -6x

Reorder the terms:
-20 + 11x2 = -6x

Solving
-20 + 11x2 = -6x

Solving for variable 'x'.

Reorder the terms:
-20 + 6x + 11x2 = -6x + 6x

Combine like terms: -6x + 6x = 0
-20 + 6x + 11x2 = 0

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

Divide each side by '11'.
-1.818181818 + 0.5454545455x + x2 = 0

Move the constant term to the right:

Add '1.818181818' to each side of the equation.
-1.818181818 + 0.5454545455x + 1.818181818 + x2 = 0 + 1.818181818

Reorder the terms:
-1.818181818 + 1.818181818 + 0.5454545455x + x2 = 0 + 1.818181818

Combine like terms: -1.818181818 + 1.818181818 = 0.000000000
0.000000000 + 0.5454545455x + x2 = 0 + 1.818181818
0.5454545455x + x2 = 0 + 1.818181818

Combine like terms: 0 + 1.818181818 = 1.818181818
0.5454545455x + x2 = 1.818181818

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 = 1.818181818 + 0.07438016533

Reorder the terms:
0.07438016533 + 0.5454545455x + x2 = 1.818181818 + 0.07438016533

Combine like terms: 1.818181818 + 0.07438016533 = 1.89256198333
0.07438016533 + 0.5454545455x + x2 = 1.89256198333

Factor a perfect square on the left side:
(x + 0.2727272728)(x + 0.2727272728) = 1.89256198333

Calculate the square root of the right side: 1.375704177

Break this problem into two subproblems by setting 
(x + 0.2727272728) equal to 1.375704177 and -1.375704177.

Subproblem 1

x + 0.2727272728 = 1.375704177 Simplifying x + 0.2727272728 = 1.375704177 Reorder the terms: 0.2727272728 + x = 1.375704177 Solving 0.2727272728 + x = 1.375704177 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 = 1.375704177 + -0.2727272728 Combine like terms: 0.2727272728 + -0.2727272728 = 0.0000000000 0.0000000000 + x = 1.375704177 + -0.2727272728 x = 1.375704177 + -0.2727272728 Combine like terms: 1.375704177 + -0.2727272728 = 1.1029769042 x = 1.1029769042 Simplifying x = 1.1029769042

Subproblem 2

x + 0.2727272728 = -1.375704177 Simplifying x + 0.2727272728 = -1.375704177 Reorder the terms: 0.2727272728 + x = -1.375704177 Solving 0.2727272728 + x = -1.375704177 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 = -1.375704177 + -0.2727272728 Combine like terms: 0.2727272728 + -0.2727272728 = 0.0000000000 0.0000000000 + x = -1.375704177 + -0.2727272728 x = -1.375704177 + -0.2727272728 Combine like terms: -1.375704177 + -0.2727272728 = -1.6484314498 x = -1.6484314498 Simplifying x = -1.6484314498

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.1029769042, -1.6484314498}

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