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Simplifying (5x + -1)(4x + -5)(x + -4) = 0 Reorder the terms: (-1 + 5x)(4x + -5)(x + -4) = 0 Reorder the terms: (-1 + 5x)(-5 + 4x)(x + -4) = 0 Reorder the terms: (-1 + 5x)(-5 + 4x)(-4 + x) = 0 Multiply (-1 + 5x) * (-5 + 4x) (-1(-5 + 4x) + 5x * (-5 + 4x))(-4 + x) = 0 ((-5 * -1 + 4x * -1) + 5x * (-5 + 4x))(-4 + x) = 0 ((5 + -4x) + 5x * (-5 + 4x))(-4 + x) = 0 (5 + -4x + (-5 * 5x + 4x * 5x))(-4 + x) = 0 (5 + -4x + (-25x + 20x2))(-4 + x) = 0 Combine like terms: -4x + -25x = -29x (5 + -29x + 20x2)(-4 + x) = 0 Multiply (5 + -29x + 20x2) * (-4 + x) (5(-4 + x) + -29x * (-4 + x) + 20x2 * (-4 + x)) = 0 ((-4 * 5 + x * 5) + -29x * (-4 + x) + 20x2 * (-4 + x)) = 0 ((-20 + 5x) + -29x * (-4 + x) + 20x2 * (-4 + x)) = 0 (-20 + 5x + (-4 * -29x + x * -29x) + 20x2 * (-4 + x)) = 0 (-20 + 5x + (116x + -29x2) + 20x2 * (-4 + x)) = 0 (-20 + 5x + 116x + -29x2 + (-4 * 20x2 + x * 20x2)) = 0 (-20 + 5x + 116x + -29x2 + (-80x2 + 20x3)) = 0 Combine like terms: 5x + 116x = 121x (-20 + 121x + -29x2 + -80x2 + 20x3) = 0 Combine like terms: -29x2 + -80x2 = -109x2 (-20 + 121x + -109x2 + 20x3) = 0 Solving -20 + 121x + -109x2 + 20x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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