18x^3+15x=39x^2

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Solution for 18x^3+15x=39x^2 equation:


Simplifying
18x3 + 15x = 39x2

Reorder the terms:
15x + 18x3 = 39x2

Solving
15x + 18x3 = 39x2

Solving for variable 'x'.

Reorder the terms:
15x + -39x2 + 18x3 = 39x2 + -39x2

Combine like terms: 39x2 + -39x2 = 0
15x + -39x2 + 18x3 = 0

Factor out the Greatest Common Factor (GCF), '3x'.
3x(5 + -13x + 6x2) = 0

Factor a trinomial.
3x((1 + -2x)(5 + -3x)) = 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 '(1 + -2x)' equal to zero and attempt to solve: Simplifying 1 + -2x = 0 Solving 1 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -2x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2x = 0 + -1 -2x = 0 + -1 Combine like terms: 0 + -1 = -1 -2x = -1 Divide each side by '-2'. x = 0.5 Simplifying x = 0.5

Subproblem 3

Set the factor '(5 + -3x)' equal to zero and attempt to solve: Simplifying 5 + -3x = 0 Solving 5 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -3x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3x = 0 + -5 -3x = 0 + -5 Combine like terms: 0 + -5 = -5 -3x = -5 Divide each side by '-3'. x = 1.666666667 Simplifying x = 1.666666667

Solution

x = {0, 0.5, 1.666666667}

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