2x^4=4x^2-2

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Solution for 2x^4=4x^2-2 equation:


Simplifying
2x4 = 4x2 + -2

Reorder the terms:
2x4 = -2 + 4x2

Solving
2x4 = -2 + 4x2

Solving for variable 'x'.

Reorder the terms:
2 + -4x2 + 2x4 = -2 + 4x2 + 2 + -4x2

Reorder the terms:
2 + -4x2 + 2x4 = -2 + 2 + 4x2 + -4x2

Combine like terms: -2 + 2 = 0
2 + -4x2 + 2x4 = 0 + 4x2 + -4x2
2 + -4x2 + 2x4 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
2 + -4x2 + 2x4 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(1 + -2x2 + x4) = 0

Factor a trinomial.
2((1 + -1x2)(1 + -1x2)) = 0

Factor a difference between two squares.
2(((1 + x)(1 + -1x))(1 + -1x2)) = 0

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

Ignore the factor 2.

Subproblem 1

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 2

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

Subproblem 3

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 4

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

Solution

x = {-1, 1, -1, 1}

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