2x^3+3x^2-12x=0

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


Simplifying
2x3 + 3x2 + -12x = 0

Reorder the terms:
-12x + 3x2 + 2x3 = 0

Solving
-12x + 3x2 + 2x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(-12 + 3x + 2x2) = 0

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 '(-12 + 3x + 2x2)' equal to zero and attempt to solve: Simplifying -12 + 3x + 2x2 = 0 Solving -12 + 3x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -6 + 1.5x + x2 = 0 Move the constant term to the right: Add '6' to each side of the equation. -6 + 1.5x + 6 + x2 = 0 + 6 Reorder the terms: -6 + 6 + 1.5x + x2 = 0 + 6 Combine like terms: -6 + 6 = 0 0 + 1.5x + x2 = 0 + 6 1.5x + x2 = 0 + 6 Combine like terms: 0 + 6 = 6 1.5x + x2 = 6 The x term is 1.5x. Take half its coefficient (0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. 1.5x + 0.5625 + x2 = 6 + 0.5625 Reorder the terms: 0.5625 + 1.5x + x2 = 6 + 0.5625 Combine like terms: 6 + 0.5625 = 6.5625 0.5625 + 1.5x + x2 = 6.5625 Factor a perfect square on the left side: (x + 0.75)(x + 0.75) = 6.5625 Calculate the square root of the right side: 2.561737691 Break this problem into two subproblems by setting (x + 0.75) equal to 2.561737691 and -2.561737691.

Subproblem 1

x + 0.75 = 2.561737691 Simplifying x + 0.75 = 2.561737691 Reorder the terms: 0.75 + x = 2.561737691 Solving 0.75 + x = 2.561737691 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 2.561737691 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 2.561737691 + -0.75 x = 2.561737691 + -0.75 Combine like terms: 2.561737691 + -0.75 = 1.811737691 x = 1.811737691 Simplifying x = 1.811737691

Subproblem 2

x + 0.75 = -2.561737691 Simplifying x + 0.75 = -2.561737691 Reorder the terms: 0.75 + x = -2.561737691 Solving 0.75 + x = -2.561737691 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = -2.561737691 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -2.561737691 + -0.75 x = -2.561737691 + -0.75 Combine like terms: -2.561737691 + -0.75 = -3.311737691 x = -3.311737691 Simplifying x = -3.311737691

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.811737691, -3.311737691}

Solution

x = {0, 1.811737691, -3.311737691}

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