6x^3+8x^2+18x=

Solution for 6x^3+8x^2+18x= equation:

Simplifying
6x3 + 8x2 + 18x = 0

Reorder the terms:
18x + 8x2 + 6x3 = 0

Solving
18x + 8x2 + 6x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2x'.
2x(9 + 4x + 3x2) = 0

Ignore the factor 2.
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 '(9 + 4x + 3x2)' equal to zero and attempt to solve:

Simplifying
9 + 4x + 3x2 = 0

Solving
9 + 4x + 3x2 = 0

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

Divide each side by '3'.
3 + 1.333333333x + x2 = 0

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + 1.333333333x + -3 + x2 = 0 + -3

Reorder the terms:
3 + -3 + 1.333333333x + x2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 1.333333333x + x2 = 0 + -3
1.333333333x + x2 = 0 + -3

Combine like terms: 0 + -3 = -3
1.333333333x + x2 = -3

The x term is 1.333333333x.  Take half its coefficient (0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
1.333333333x + 0.4444444442 + x2 = -3 + 0.4444444442

Reorder the terms:
0.4444444442 + 1.333333333x + x2 = -3 + 0.4444444442

Combine like terms: -3 + 0.4444444442 = -2.5555555558
0.4444444442 + 1.333333333x + x2 = -2.5555555558

Factor a perfect square on the left side:
(x + 0.6666666665)(x + 0.6666666665) = -2.5555555558

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}