6x^3+39x^2+66x=0

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Solution for 6x^3+39x^2+66x=0 equation:


Simplifying
6x3 + 39x2 + 66x = 0

Reorder the terms:
66x + 39x2 + 6x3 = 0

Solving
66x + 39x2 + 6x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3x'.
3x(22 + 13x + 2x2) = 0

Ignore the factor 3.

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 + 13x + 2x2)' equal to zero and attempt to solve: Simplifying 22 + 13x + 2x2 = 0 Solving 22 + 13x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 11 + 6.5x + x2 = 0 Move the constant term to the right: Add '-11' to each side of the equation. 11 + 6.5x + -11 + x2 = 0 + -11 Reorder the terms: 11 + -11 + 6.5x + x2 = 0 + -11 Combine like terms: 11 + -11 = 0 0 + 6.5x + x2 = 0 + -11 6.5x + x2 = 0 + -11 Combine like terms: 0 + -11 = -11 6.5x + x2 = -11 The x term is 6.5x. Take half its coefficient (3.25). Square it (10.5625) and add it to both sides. Add '10.5625' to each side of the equation. 6.5x + 10.5625 + x2 = -11 + 10.5625 Reorder the terms: 10.5625 + 6.5x + x2 = -11 + 10.5625 Combine like terms: -11 + 10.5625 = -0.4375 10.5625 + 6.5x + x2 = -0.4375 Factor a perfect square on the left side: (x + 3.25)(x + 3.25) = -0.4375 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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