15x^7+39x^6+18x^5=0

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Solution for 15x^7+39x^6+18x^5=0 equation:


Simplifying
15x7 + 39x6 + 18x5 = 0

Reorder the terms:
18x5 + 39x6 + 15x7 = 0

Solving
18x5 + 39x6 + 15x7 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3x5'.
3x5(6 + 13x + 5x2) = 0

Factor a trinomial.
3x5((2 + x)(3 + 5x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor 'x5' equal to zero and attempt to solve: Simplifying x5 = 0 Solving x5 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x5 = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 2

Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2

Subproblem 3

Set the factor '(3 + 5x)' equal to zero and attempt to solve: Simplifying 3 + 5x = 0 Solving 3 + 5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 5x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 5x = 0 + -3 5x = 0 + -3 Combine like terms: 0 + -3 = -3 5x = -3 Divide each side by '5'. x = -0.6 Simplifying x = -0.6

Solution

x = {-2, -0.6}

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