6x^2-6x+3-4(x^2+4x+2)=

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Solution for 6x^2-6x+3-4(x^2+4x+2)= equation:


Simplifying
6x2 + -6x + 3 + -4(x2 + 4x + 2) = 0

Reorder the terms:
6x2 + -6x + 3 + -4(2 + 4x + x2) = 0
6x2 + -6x + 3 + (2 * -4 + 4x * -4 + x2 * -4) = 0
6x2 + -6x + 3 + (-8 + -16x + -4x2) = 0

Reorder the terms:
3 + -8 + -6x + -16x + 6x2 + -4x2 = 0

Combine like terms: 3 + -8 = -5
-5 + -6x + -16x + 6x2 + -4x2 = 0

Combine like terms: -6x + -16x = -22x
-5 + -22x + 6x2 + -4x2 = 0

Combine like terms: 6x2 + -4x2 = 2x2
-5 + -22x + 2x2 = 0

Solving
-5 + -22x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-2.5 + -11x + x2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + -11x + 2.5 + x2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + -11x + x2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + -11x + x2 = 0 + 2.5
-11x + x2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
-11x + x2 = 2.5

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 = 2.5 + 30.25

Reorder the terms:
30.25 + -11x + x2 = 2.5 + 30.25

Combine like terms: 2.5 + 30.25 = 32.75
30.25 + -11x + x2 = 32.75

Factor a perfect square on the left side:
(x + -5.5)(x + -5.5) = 32.75

Calculate the square root of the right side: 5.722761571

Break this problem into two subproblems by setting 
(x + -5.5) equal to 5.722761571 and -5.722761571.

Subproblem 1

x + -5.5 = 5.722761571 Simplifying x + -5.5 = 5.722761571 Reorder the terms: -5.5 + x = 5.722761571 Solving -5.5 + x = 5.722761571 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 = 5.722761571 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 5.722761571 + 5.5 x = 5.722761571 + 5.5 Combine like terms: 5.722761571 + 5.5 = 11.222761571 x = 11.222761571 Simplifying x = 11.222761571

Subproblem 2

x + -5.5 = -5.722761571 Simplifying x + -5.5 = -5.722761571 Reorder the terms: -5.5 + x = -5.722761571 Solving -5.5 + x = -5.722761571 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 = -5.722761571 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -5.722761571 + 5.5 x = -5.722761571 + 5.5 Combine like terms: -5.722761571 + 5.5 = -0.222761571 x = -0.222761571 Simplifying x = -0.222761571

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.222761571, -0.222761571}

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