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Simplifying (x + 5)(x + -7)(x + -15) = 0 Reorder the terms: (5 + x)(x + -7)(x + -15) = 0 Reorder the terms: (5 + x)(-7 + x)(x + -15) = 0 Reorder the terms: (5 + x)(-7 + x)(-15 + x) = 0 Multiply (5 + x) * (-7 + x) (5(-7 + x) + x(-7 + x))(-15 + x) = 0 ((-7 * 5 + x * 5) + x(-7 + x))(-15 + x) = 0 ((-35 + 5x) + x(-7 + x))(-15 + x) = 0 (-35 + 5x + (-7 * x + x * x))(-15 + x) = 0 (-35 + 5x + (-7x + x2))(-15 + x) = 0 Combine like terms: 5x + -7x = -2x (-35 + -2x + x2)(-15 + x) = 0 Multiply (-35 + -2x + x2) * (-15 + x) (-35(-15 + x) + -2x * (-15 + x) + x2(-15 + x)) = 0 ((-15 * -35 + x * -35) + -2x * (-15 + x) + x2(-15 + x)) = 0 ((525 + -35x) + -2x * (-15 + x) + x2(-15 + x)) = 0 (525 + -35x + (-15 * -2x + x * -2x) + x2(-15 + x)) = 0 (525 + -35x + (30x + -2x2) + x2(-15 + x)) = 0 (525 + -35x + 30x + -2x2 + (-15 * x2 + x * x2)) = 0 (525 + -35x + 30x + -2x2 + (-15x2 + x3)) = 0 Combine like terms: -35x + 30x = -5x (525 + -5x + -2x2 + -15x2 + x3) = 0 Combine like terms: -2x2 + -15x2 = -17x2 (525 + -5x + -17x2 + x3) = 0 Solving 525 + -5x + -17x2 + x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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