8x^3+18x^2+16x=0

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Solution for 8x^3+18x^2+16x=0 equation:


Simplifying
8x3 + 18x2 + 16x = 0

Reorder the terms:
16x + 18x2 + 8x3 = 0

Solving
16x + 18x2 + 8x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2x'.
2x(8 + 9x + 4x2) = 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 '(8 + 9x + 4x2)' equal to zero and attempt to solve: Simplifying 8 + 9x + 4x2 = 0 Solving 8 + 9x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 2 + 2.25x + x2 = 0 Move the constant term to the right: Add '-2' to each side of the equation. 2 + 2.25x + -2 + x2 = 0 + -2 Reorder the terms: 2 + -2 + 2.25x + x2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 2.25x + x2 = 0 + -2 2.25x + x2 = 0 + -2 Combine like terms: 0 + -2 = -2 2.25x + x2 = -2 The x term is 2.25x. Take half its coefficient (1.125). Square it (1.265625) and add it to both sides. Add '1.265625' to each side of the equation. 2.25x + 1.265625 + x2 = -2 + 1.265625 Reorder the terms: 1.265625 + 2.25x + x2 = -2 + 1.265625 Combine like terms: -2 + 1.265625 = -0.734375 1.265625 + 2.25x + x2 = -0.734375 Factor a perfect square on the left side: (x + 1.125)(x + 1.125) = -0.734375 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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