6x^3=27x^2-15x

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Solution for 6x^3=27x^2-15x equation:


Simplifying
6x3 = 27x2 + -15x

Reorder the terms:
6x3 = -15x + 27x2

Solving
6x3 = -15x + 27x2

Solving for variable 'x'.

Reorder the terms:
15x + -27x2 + 6x3 = -15x + 27x2 + 15x + -27x2

Reorder the terms:
15x + -27x2 + 6x3 = -15x + 15x + 27x2 + -27x2

Combine like terms: -15x + 15x = 0
15x + -27x2 + 6x3 = 0 + 27x2 + -27x2
15x + -27x2 + 6x3 = 27x2 + -27x2

Combine like terms: 27x2 + -27x2 = 0
15x + -27x2 + 6x3 = 0

Factor out the Greatest Common Factor (GCF), '3x'.
3x(5 + -9x + 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 '(5 + -9x + 2x2)' equal to zero and attempt to solve: Simplifying 5 + -9x + 2x2 = 0 Solving 5 + -9x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 2.5 + -4.5x + x2 = 0 Move the constant term to the right: Add '-2.5' to each side of the equation. 2.5 + -4.5x + -2.5 + x2 = 0 + -2.5 Reorder the terms: 2.5 + -2.5 + -4.5x + x2 = 0 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + -4.5x + x2 = 0 + -2.5 -4.5x + x2 = 0 + -2.5 Combine like terms: 0 + -2.5 = -2.5 -4.5x + x2 = -2.5 The x term is -4.5x. Take half its coefficient (-2.25). Square it (5.0625) and add it to both sides. Add '5.0625' to each side of the equation. -4.5x + 5.0625 + x2 = -2.5 + 5.0625 Reorder the terms: 5.0625 + -4.5x + x2 = -2.5 + 5.0625 Combine like terms: -2.5 + 5.0625 = 2.5625 5.0625 + -4.5x + x2 = 2.5625 Factor a perfect square on the left side: (x + -2.25)(x + -2.25) = 2.5625 Calculate the square root of the right side: 1.600781059 Break this problem into two subproblems by setting (x + -2.25) equal to 1.600781059 and -1.600781059.

Subproblem 1

x + -2.25 = 1.600781059 Simplifying x + -2.25 = 1.600781059 Reorder the terms: -2.25 + x = 1.600781059 Solving -2.25 + x = 1.600781059 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = 1.600781059 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = 1.600781059 + 2.25 x = 1.600781059 + 2.25 Combine like terms: 1.600781059 + 2.25 = 3.850781059 x = 3.850781059 Simplifying x = 3.850781059

Subproblem 2

x + -2.25 = -1.600781059 Simplifying x + -2.25 = -1.600781059 Reorder the terms: -2.25 + x = -1.600781059 Solving -2.25 + x = -1.600781059 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = -1.600781059 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = -1.600781059 + 2.25 x = -1.600781059 + 2.25 Combine like terms: -1.600781059 + 2.25 = 0.649218941 x = 0.649218941 Simplifying x = 0.649218941

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.850781059, 0.649218941}

Solution

x = {0, 3.850781059, 0.649218941}

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