3x^3-4x^2=x

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Solution for 3x^3-4x^2=x equation:


Simplifying
3x3 + -4x2 = x

Reorder the terms:
-4x2 + 3x3 = x

Solving
-4x2 + 3x3 = x

Solving for variable 'x'.

Reorder the terms:
-1x + -4x2 + 3x3 = x + -1x

Combine like terms: x + -1x = 0
-1x + -4x2 + 3x3 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(-1 + -4x + 3x2) = 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 '(-1 + -4x + 3x2)' equal to zero and attempt to solve: Simplifying -1 + -4x + 3x2 = 0 Solving -1 + -4x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -0.3333333333 + -1.333333333x + x2 = 0 Move the constant term to the right: Add '0.3333333333' to each side of the equation. -0.3333333333 + -1.333333333x + 0.3333333333 + x2 = 0 + 0.3333333333 Reorder the terms: -0.3333333333 + 0.3333333333 + -1.333333333x + x2 = 0 + 0.3333333333 Combine like terms: -0.3333333333 + 0.3333333333 = 0.0000000000 0.0000000000 + -1.333333333x + x2 = 0 + 0.3333333333 -1.333333333x + x2 = 0 + 0.3333333333 Combine like terms: 0 + 0.3333333333 = 0.3333333333 -1.333333333x + x2 = 0.3333333333 The x term is -1.333333333x. Take half its coefficient (-0.6666666665). Square it (0.4444444442) and add it to both sides. Add '0.4444444442' to each side of the equation. -1.333333333x + 0.4444444442 + x2 = 0.3333333333 + 0.4444444442 Reorder the terms: 0.4444444442 + -1.333333333x + x2 = 0.3333333333 + 0.4444444442 Combine like terms: 0.3333333333 + 0.4444444442 = 0.7777777775 0.4444444442 + -1.333333333x + x2 = 0.7777777775 Factor a perfect square on the left side: (x + -0.6666666665)(x + -0.6666666665) = 0.7777777775 Calculate the square root of the right side: 0.881917104 Break this problem into two subproblems by setting (x + -0.6666666665) equal to 0.881917104 and -0.881917104.

Subproblem 1

x + -0.6666666665 = 0.881917104 Simplifying x + -0.6666666665 = 0.881917104 Reorder the terms: -0.6666666665 + x = 0.881917104 Solving -0.6666666665 + x = 0.881917104 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + x = 0.881917104 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + x = 0.881917104 + 0.6666666665 x = 0.881917104 + 0.6666666665 Combine like terms: 0.881917104 + 0.6666666665 = 1.5485837705 x = 1.5485837705 Simplifying x = 1.5485837705

Subproblem 2

x + -0.6666666665 = -0.881917104 Simplifying x + -0.6666666665 = -0.881917104 Reorder the terms: -0.6666666665 + x = -0.881917104 Solving -0.6666666665 + x = -0.881917104 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + x = -0.881917104 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + x = -0.881917104 + 0.6666666665 x = -0.881917104 + 0.6666666665 Combine like terms: -0.881917104 + 0.6666666665 = -0.2152504375 x = -0.2152504375 Simplifying x = -0.2152504375

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.5485837705, -0.2152504375}

Solution

x = {0, 1.5485837705, -0.2152504375}

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