a^5-18a=7a^3

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Solution for a^5-18a=7a^3 equation:


Simplifying
a5 + -18a = 7a3

Reorder the terms:
-18a + a5 = 7a3

Solving
-18a + a5 = 7a3

Solving for variable 'a'.

Reorder the terms:
-18a + -7a3 + a5 = 7a3 + -7a3

Combine like terms: 7a3 + -7a3 = 0
-18a + -7a3 + a5 = 0

Factor out the Greatest Common Factor (GCF), 'a'.
a(-18 + -7a2 + a4) = 0

Factor a trinomial.
a((-2 + -1a2)(9 + -1a2)) = 0

Factor a difference between two squares.
a((-2 + -1a2)((3 + a)(3 + -1a))) = 0

Subproblem 1

Set the factor 'a' equal to zero and attempt to solve: Simplifying a = 0 Solving a = 0 Move all terms containing a to the left, all other terms to the right. Simplifying a = 0

Subproblem 2

Set the factor '(-2 + -1a2)' equal to zero and attempt to solve: Simplifying -2 + -1a2 = 0 Solving -2 + -1a2 = 0 Move all terms containing a to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1a2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1a2 = 0 + 2 -1a2 = 0 + 2 Combine like terms: 0 + 2 = 2 -1a2 = 2 Divide each side by '-1'. a2 = -2 Simplifying a2 = -2 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 3

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

Subproblem 4

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

Solution

a = {0, -3, 3}

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