8x^3+4x^2+12x=0

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Solution for 8x^3+4x^2+12x=0 equation:


Simplifying
8x3 + 4x2 + 12x = 0

Reorder the terms:
12x + 4x2 + 8x3 = 0

Solving
12x + 4x2 + 8x3 = 0

Solving for variable 'x'.

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

Ignore the factor 4.

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 '(3 + x + 2x2)' equal to zero and attempt to solve: Simplifying 3 + x + 2x2 = 0 Solving 3 + x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 1.5 + 0.5x + x2 = 0 Move the constant term to the right: Add '-1.5' to each side of the equation. 1.5 + 0.5x + -1.5 + x2 = 0 + -1.5 Reorder the terms: 1.5 + -1.5 + 0.5x + x2 = 0 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + 0.5x + x2 = 0 + -1.5 0.5x + x2 = 0 + -1.5 Combine like terms: 0 + -1.5 = -1.5 0.5x + x2 = -1.5 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 0.5x + 0.25 + x2 = -1.5 + 0.25 Reorder the terms: 0.25 + 0.5x + x2 = -1.5 + 0.25 Combine like terms: -1.5 + 0.25 = -1.25 0.25 + 0.5x + x2 = -1.25 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -1.25 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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