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Simplifying x2(x2 + -4) + -16(x2 + -4) = 0 Reorder the terms: x2(-4 + x2) + -16(x2 + -4) = 0 (-4 * x2 + x2 * x2) + -16(x2 + -4) = 0 (-4x2 + x4) + -16(x2 + -4) = 0 Reorder the terms: -4x2 + x4 + -16(-4 + x2) = 0 -4x2 + x4 + (-4 * -16 + x2 * -16) = 0 -4x2 + x4 + (64 + -16x2) = 0 Reorder the terms: 64 + -4x2 + -16x2 + x4 = 0 Combine like terms: -4x2 + -16x2 = -20x2 64 + -20x2 + x4 = 0 Solving 64 + -20x2 + x4 = 0 Solving for variable 'x'. Factor a trinomial. (4 + -1x2)(16 + -1x2) = 0 Factor a difference between two squares. ((2 + x)(2 + -1x))(16 + -1x2) = 0 Factor a difference between two squares. ((4 + x)(4 + -1x))(2 + x)(2 + -1x) = 0Subproblem 1
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 = -2Subproblem 2
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 = 2Subproblem 3
Set the factor '(4 + x)' equal to zero and attempt to solve: Simplifying 4 + x = 0 Solving 4 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + x = 0 + -4 x = 0 + -4 Combine like terms: 0 + -4 = -4 x = -4 Simplifying x = -4Subproblem 4
Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4Solution
x = {-2, 2, -4, 4}
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