3x^3+15x=6x^2

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Solution for 3x^3+15x=6x^2 equation:


Simplifying
3x3 + 15x = 6x2

Reorder the terms:
15x + 3x3 = 6x2

Solving
15x + 3x3 = 6x2

Solving for variable 'x'.

Reorder the terms:
15x + -6x2 + 3x3 = 6x2 + -6x2

Combine like terms: 6x2 + -6x2 = 0
15x + -6x2 + 3x3 = 0

Factor out the Greatest Common Factor (GCF), '3x'.
3x(5 + -2x + x2) = 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 + -2x + x2)' equal to zero and attempt to solve: Simplifying 5 + -2x + x2 = 0 Solving 5 + -2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-5' to each side of the equation. 5 + -2x + -5 + x2 = 0 + -5 Reorder the terms: 5 + -5 + -2x + x2 = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2x + x2 = 0 + -5 -2x + x2 = 0 + -5 Combine like terms: 0 + -5 = -5 -2x + x2 = -5 The x term is -2x. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2x + 1 + x2 = -5 + 1 Reorder the terms: 1 + -2x + x2 = -5 + 1 Combine like terms: -5 + 1 = -4 1 + -2x + x2 = -4 Factor a perfect square on the left side: (x + -1)(x + -1) = -4 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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