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Simplifying (5x + -1)(x + -7)(x + 4) = 0 Reorder the terms: (-1 + 5x)(x + -7)(x + 4) = 0 Reorder the terms: (-1 + 5x)(-7 + x)(x + 4) = 0 Reorder the terms: (-1 + 5x)(-7 + x)(4 + x) = 0 Multiply (-1 + 5x) * (-7 + x) (-1(-7 + x) + 5x * (-7 + x))(4 + x) = 0 ((-7 * -1 + x * -1) + 5x * (-7 + x))(4 + x) = 0 ((7 + -1x) + 5x * (-7 + x))(4 + x) = 0 (7 + -1x + (-7 * 5x + x * 5x))(4 + x) = 0 (7 + -1x + (-35x + 5x2))(4 + x) = 0 Combine like terms: -1x + -35x = -36x (7 + -36x + 5x2)(4 + x) = 0 Multiply (7 + -36x + 5x2) * (4 + x) (7(4 + x) + -36x * (4 + x) + 5x2 * (4 + x)) = 0 ((4 * 7 + x * 7) + -36x * (4 + x) + 5x2 * (4 + x)) = 0 ((28 + 7x) + -36x * (4 + x) + 5x2 * (4 + x)) = 0 (28 + 7x + (4 * -36x + x * -36x) + 5x2 * (4 + x)) = 0 (28 + 7x + (-144x + -36x2) + 5x2 * (4 + x)) = 0 (28 + 7x + -144x + -36x2 + (4 * 5x2 + x * 5x2)) = 0 (28 + 7x + -144x + -36x2 + (20x2 + 5x3)) = 0 Combine like terms: 7x + -144x = -137x (28 + -137x + -36x2 + 20x2 + 5x3) = 0 Combine like terms: -36x2 + 20x2 = -16x2 (28 + -137x + -16x2 + 5x3) = 0 Solving 28 + -137x + -16x2 + 5x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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