8x^3+28x^2+88x=0

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Solution for 8x^3+28x^2+88x=0 equation:


Simplifying
8x3 + 28x2 + 88x = 0

Reorder the terms:
88x + 28x2 + 8x3 = 0

Solving
88x + 28x2 + 8x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '4x'.
4x(22 + 7x + 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 '(22 + 7x + 2x2)' equal to zero and attempt to solve: Simplifying 22 + 7x + 2x2 = 0 Solving 22 + 7x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 11 + 3.5x + x2 = 0 Move the constant term to the right: Add '-11' to each side of the equation. 11 + 3.5x + -11 + x2 = 0 + -11 Reorder the terms: 11 + -11 + 3.5x + x2 = 0 + -11 Combine like terms: 11 + -11 = 0 0 + 3.5x + x2 = 0 + -11 3.5x + x2 = 0 + -11 Combine like terms: 0 + -11 = -11 3.5x + x2 = -11 The x term is 3.5x. Take half its coefficient (1.75). Square it (3.0625) and add it to both sides. Add '3.0625' to each side of the equation. 3.5x + 3.0625 + x2 = -11 + 3.0625 Reorder the terms: 3.0625 + 3.5x + x2 = -11 + 3.0625 Combine like terms: -11 + 3.0625 = -7.9375 3.0625 + 3.5x + x2 = -7.9375 Factor a perfect square on the left side: (x + 1.75)(x + 1.75) = -7.9375 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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