3(x-11)x-3=11

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Solution for 3(x-11)x-3=11 equation:


Simplifying
3(x + -11) * x + -3 = 11

Reorder the terms:
3(-11 + x) * x + -3 = 11

Reorder the terms for easier multiplication:
3x(-11 + x) + -3 = 11
(-11 * 3x + x * 3x) + -3 = 11
(-33x + 3x2) + -3 = 11

Reorder the terms:
-3 + -33x + 3x2 = 11

Solving
-3 + -33x + 3x2 = 11

Solving for variable 'x'.

Reorder the terms:
-3 + -11 + -33x + 3x2 = 11 + -11

Combine like terms: -3 + -11 = -14
-14 + -33x + 3x2 = 11 + -11

Combine like terms: 11 + -11 = 0
-14 + -33x + 3x2 = 0

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

Divide each side by '3'.
-4.666666667 + -11x + x2 = 0

Move the constant term to the right:

Add '4.666666667' to each side of the equation.
-4.666666667 + -11x + 4.666666667 + x2 = 0 + 4.666666667

Reorder the terms:
-4.666666667 + 4.666666667 + -11x + x2 = 0 + 4.666666667

Combine like terms: -4.666666667 + 4.666666667 = 0.000000000
0.000000000 + -11x + x2 = 0 + 4.666666667
-11x + x2 = 0 + 4.666666667

Combine like terms: 0 + 4.666666667 = 4.666666667
-11x + x2 = 4.666666667

The x term is -11x.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11x + 30.25 + x2 = 4.666666667 + 30.25

Reorder the terms:
30.25 + -11x + x2 = 4.666666667 + 30.25

Combine like terms: 4.666666667 + 30.25 = 34.916666667
30.25 + -11x + x2 = 34.916666667

Factor a perfect square on the left side:
(x + -5.5)(x + -5.5) = 34.916666667

Calculate the square root of the right side: 5.909032634

Break this problem into two subproblems by setting 
(x + -5.5) equal to 5.909032634 and -5.909032634.

Subproblem 1

x + -5.5 = 5.909032634 Simplifying x + -5.5 = 5.909032634 Reorder the terms: -5.5 + x = 5.909032634 Solving -5.5 + x = 5.909032634 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = 5.909032634 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 5.909032634 + 5.5 x = 5.909032634 + 5.5 Combine like terms: 5.909032634 + 5.5 = 11.409032634 x = 11.409032634 Simplifying x = 11.409032634

Subproblem 2

x + -5.5 = -5.909032634 Simplifying x + -5.5 = -5.909032634 Reorder the terms: -5.5 + x = -5.909032634 Solving -5.5 + x = -5.909032634 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = -5.909032634 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -5.909032634 + 5.5 x = -5.909032634 + 5.5 Combine like terms: -5.909032634 + 5.5 = -0.409032634 x = -0.409032634 Simplifying x = -0.409032634

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.409032634, -0.409032634}

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