(3x^2)-(12x)+11=0

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Solution for (3x^2)-(12x)+11=0 equation:


Simplifying
(3x2) + -1(12x) + 11 = 0

Remove parenthesis around (12x)
(3x2) + -1 * 12x + 11 = 0

Multiply -1 * 12
(3x2) + -12x + 11 = 0

Reorder the terms:
11 + -12x + (3x2) = 0

Solving
11 + -12x + (3x2) = 0

Solving for variable 'x'.

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

Divide each side by '3'.
3.666666667 + -4x + x2 = 0

Move the constant term to the right:

Add '-3.666666667' to each side of the equation.
3.666666667 + -4x + -3.666666667 + x2 = 0 + -3.666666667

Reorder the terms:
3.666666667 + -3.666666667 + -4x + x2 = 0 + -3.666666667

Combine like terms: 3.666666667 + -3.666666667 = 0.000000000
0.000000000 + -4x + x2 = 0 + -3.666666667
-4x + x2 = 0 + -3.666666667

Combine like terms: 0 + -3.666666667 = -3.666666667
-4x + x2 = -3.666666667

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = -3.666666667 + 4

Reorder the terms:
4 + -4x + x2 = -3.666666667 + 4

Combine like terms: -3.666666667 + 4 = 0.333333333
4 + -4x + x2 = 0.333333333

Factor a perfect square on the left side:
((x) + -2)((x) + -2) = 0.333333333

Calculate the square root of the right side: 0.577350269

Break this problem into two subproblems by setting 
((x) + -2) equal to 0.577350269 and -0.577350269.


Subproblem 1
(x) + -2 = 0.577350269

Simplifying
(x) + -2 = 0.577350269
x + -2 = 0.577350269

Reorder the terms:
-2 + x = 0.577350269

Solving
-2 + x = 0.577350269

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '2' to each side of the equation.
-2 + 2 + x = 0.577350269 + 2

Combine like terms: -2 + 2 = 0
0 + x = 0.577350269 + 2
x = 0.577350269 + 2

Combine like terms: 0.577350269 + 2 = 2.577350269
x = 2.577350269

Simplifying
x = 2.577350269


Subproblem 2
(x) + -2 = -0.577350269

Simplifying
(x) + -2 = -0.577350269
x + -2 = -0.577350269

Reorder the terms:
-2 + x = -0.577350269

Solving
-2 + x = -0.577350269

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '2' to each side of the equation.
-2 + 2 + x = -0.577350269 + 2

Combine like terms: -2 + 2 = 0
0 + x = -0.577350269 + 2
x = -0.577350269 + 2

Combine like terms: -0.577350269 + 2 = 1.422649731
x = 1.422649731

Simplifying
x = 1.422649731


Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {2.577350269, 1.422649731}

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