X^4-2X^2-3=-4

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Solution for X^4-2X^2-3=-4 equation:


Simplifying
X4 + -2X2 + -3 = -4

Reorder the terms:
-3 + -2X2 + X4 = -4

Solving
-3 + -2X2 + X4 = -4

Solving for variable 'X'.

Reorder the terms:
-3 + 4 + -2X2 + X4 = -4 + 4

Combine like terms: -3 + 4 = 1
1 + -2X2 + X4 = -4 + 4

Combine like terms: -4 + 4 = 0
1 + -2X2 + X4 = 0

Factor a trinomial.
(1 + -1X2)(1 + -1X2) = 0

Factor a difference between two squares.
((1 + X)(1 + -1X))(1 + -1X2) = 0

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

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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