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Simplifying (x2 + -4)(x2 + -25) = 0 Reorder the terms: (-4 + x2)(x2 + -25) = 0 Reorder the terms: (-4 + x2)(-25 + x2) = 0 Multiply (-4 + x2) * (-25 + x2) (-4(-25 + x2) + x2(-25 + x2)) = 0 ((-25 * -4 + x2 * -4) + x2(-25 + x2)) = 0 ((100 + -4x2) + x2(-25 + x2)) = 0 (100 + -4x2 + (-25 * x2 + x2 * x2)) = 0 (100 + -4x2 + (-25x2 + x4)) = 0 Combine like terms: -4x2 + -25x2 = -29x2 (100 + -29x2 + x4) = 0 Solving 100 + -29x2 + x4 = 0 Solving for variable 'x'. Factor a trinomial. (4 + -1x2)(25 + -1x2) = 0 Factor a difference between two squares. ((2 + x)(2 + -1x))(25 + -1x2) = 0 Factor a difference between two squares. ((5 + x)(5 + -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 '(5 + x)' equal to zero and attempt to solve: Simplifying 5 + x = 0 Solving 5 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + x = 0 + -5 x = 0 + -5 Combine like terms: 0 + -5 = -5 x = -5 Simplifying x = -5Subproblem 4
Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5Solution
x = {-2, 2, -5, 5}
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