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Simplifying (5x + 9)(5x + -9) = 25x + -81 Reorder the terms: (9 + 5x)(5x + -9) = 25x + -81 Reorder the terms: (9 + 5x)(-9 + 5x) = 25x + -81 Multiply (9 + 5x) * (-9 + 5x) (9(-9 + 5x) + 5x * (-9 + 5x)) = 25x + -81 ((-9 * 9 + 5x * 9) + 5x * (-9 + 5x)) = 25x + -81 ((-81 + 45x) + 5x * (-9 + 5x)) = 25x + -81 (-81 + 45x + (-9 * 5x + 5x * 5x)) = 25x + -81 (-81 + 45x + (-45x + 25x2)) = 25x + -81 Combine like terms: 45x + -45x = 0 (-81 + 0 + 25x2) = 25x + -81 (-81 + 25x2) = 25x + -81 Reorder the terms: -81 + 25x2 = -81 + 25x Add '81' to each side of the equation. -81 + 81 + 25x2 = -81 + 81 + 25x Combine like terms: -81 + 81 = 0 0 + 25x2 = -81 + 81 + 25x 25x2 = -81 + 81 + 25x Combine like terms: -81 + 81 = 0 25x2 = 0 + 25x 25x2 = 25x Solving 25x2 = 25x Solving for variable 'x'. Reorder the terms: -25x + 25x2 = 25x + -25x Combine like terms: 25x + -25x = 0 -25x + 25x2 = 0 Factor out the Greatest Common Factor (GCF), '25x'. 25x(-1 + x) = 0 Ignore the factor 25.Subproblem 1
Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0Subproblem 2
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 = 1Solution
x = {0, 1}
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