12x^5-21x^3=108x

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Solution for 12x^5-21x^3=108x equation:


Simplifying
12x5 + -21x3 = 108x

Reorder the terms:
-21x3 + 12x5 = 108x

Solving
-21x3 + 12x5 = 108x

Solving for variable 'x'.

Reorder the terms:
-108x + -21x3 + 12x5 = 108x + -108x

Combine like terms: 108x + -108x = 0
-108x + -21x3 + 12x5 = 0

Factor out the Greatest Common Factor (GCF), '3x'.
3x(-36 + -7x2 + 4x4) = 0

Factor a trinomial.
3x((-9 + -4x2)(4 + -1x2)) = 0

Factor a difference between two squares.
3x((-9 + -4x2)((2 + x)(2 + -1x))) = 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 '(-9 + -4x2)' equal to zero and attempt to solve: Simplifying -9 + -4x2 = 0 Solving -9 + -4x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -4x2 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -4x2 = 0 + 9 -4x2 = 0 + 9 Combine like terms: 0 + 9 = 9 -4x2 = 9 Divide each side by '-4'. x2 = -2.25 Simplifying x2 = -2.25 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 '(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 4

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 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 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {0, -2, 2}

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