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Simplifying (x2 + -1)(x2 + -1) = 0 Reorder the terms: (-1 + x2)(x2 + -1) = 0 Reorder the terms: (-1 + x2)(-1 + x2) = 0 Multiply (-1 + x2) * (-1 + x2) (-1(-1 + x2) + x2(-1 + x2)) = 0 ((-1 * -1 + x2 * -1) + x2(-1 + x2)) = 0 ((1 + -1x2) + x2(-1 + x2)) = 0 (1 + -1x2 + (-1 * x2 + x2 * x2)) = 0 (1 + -1x2 + (-1x2 + x4)) = 0 Combine like terms: -1x2 + -1x2 = -2x2 (1 + -2x2 + x4) = 0 Solving 1 + -2x2 + x4 = 0 Solving for variable 'x'. 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) = 0Subproblem 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 = -1Subproblem 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 = 1Subproblem 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 = -1Subproblem 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 = 1Solution
x = {-1, 1, -1, 1}
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