-x^3+4x^2-4x-16-8x+16=0

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Solution for -x^3+4x^2-4x-16-8x+16=0 equation: 


Simplifying
-1x3 + 4x2 + -4x + -16 + -8x + 16 = 0

Reorder the terms:
-16 + 16 + -4x + -8x + 4x2 + -1x3 = 0

Combine like terms: -16 + 16 = 0
0 + -4x + -8x + 4x2 + -1x3 = 0
-4x + -8x + 4x2 + -1x3 = 0

Combine like terms: -4x + -8x = -12x
-12x + 4x2 + -1x3 = 0

Solving
-12x + 4x2 + -1x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(-12 + 4x + -1x2) = 0


Subproblem 1
Set the factor 'x' equal to zero and attempt to solve:

Simplifying
x = 0

Solving
x = 0

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

Simplifying
x = 0

Subproblem 2
Set the factor '(-12 + 4x + -1x2)' equal to zero and attempt to solve:

Simplifying
-12 + 4x + -1x2 = 0

Solving
-12 + 4x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
12 + -4x + x2 = 0

Move the constant term to the right:

Add '-12' to each side of the equation.
12 + -4x + -12 + x2 = 0 + -12

Reorder the terms:
12 + -12 + -4x + x2 = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -4x + x2 = 0 + -12
-4x + x2 = 0 + -12

Combine like terms: 0 + -12 = -12
-4x + x2 = -12

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 = -12 + 4

Reorder the terms:
4 + -4x + x2 = -12 + 4

Combine like terms: -12 + 4 = -8
4 + -4x + x2 = -8

Factor a perfect square on the left side:
(x + -2)(x + -2) = -8

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Solution
x = {0}

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