7x^19+14x^3-21x^3=0

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Solution for 7x^19+14x^3-21x^3=0 equation:


Simplifying
7x19 + 14x3 + -21x3 = 0

Reorder the terms:
14x3 + -21x3 + 7x19 = 0

Combine like terms: 14x3 + -21x3 = -7x3
-7x3 + 7x19 = 0

Solving
-7x3 + 7x19 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '7x3'.
7x3(-1 + x16) = 0

Factor a difference between two squares.
7x3((1 + x8)(-1 + x8)) = 0

Factor a difference between two squares.
7x3((1 + x8)((1 + x4)(-1 + x4))) = 0

Factor a difference between two squares.
7x3((1 + x8)((1 + x4)((1 + x2)(-1 + x2)))) = 0

Factor a difference between two squares.
7x3((1 + x8)((1 + x4)((1 + x2)((1 + x)(-1 + x))))) = 0

Ignore the factor 7.

Subproblem 1

Set the factor 'x3' equal to zero and attempt to solve: Simplifying x3 = 0 Solving x3 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x3 = 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 '(1 + x8)' equal to zero and attempt to solve: Simplifying 1 + x8 = 0 Solving 1 + x8 = 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 + x8 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x8 = 0 + -1 x8 = 0 + -1 Combine like terms: 0 + -1 = -1 x8 = -1 Simplifying x8 = -1 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 '(1 + x4)' equal to zero and attempt to solve: Simplifying 1 + x4 = 0 Solving 1 + x4 = 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 + x4 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x4 = 0 + -1 x4 = 0 + -1 Combine like terms: 0 + -1 = -1 x4 = -1 Simplifying x4 = -1 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 4

Set the factor '(1 + x2)' equal to zero and attempt to solve: Simplifying 1 + x2 = 0 Solving 1 + x2 = 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 + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x2 = 0 + -1 x2 = 0 + -1 Combine like terms: 0 + -1 = -1 x2 = -1 Simplifying x2 = -1 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 5

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

Subproblem 6

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

Solution

x = {-1, 1}

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