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Simplifying (x + 2)(x + -5)(x + -7) = 0 Reorder the terms: (2 + x)(x + -5)(x + -7) = 0 Reorder the terms: (2 + x)(-5 + x)(x + -7) = 0 Reorder the terms: (2 + x)(-5 + x)(-7 + x) = 0 Multiply (2 + x) * (-5 + x) (2(-5 + x) + x(-5 + x))(-7 + x) = 0 ((-5 * 2 + x * 2) + x(-5 + x))(-7 + x) = 0 ((-10 + 2x) + x(-5 + x))(-7 + x) = 0 (-10 + 2x + (-5 * x + x * x))(-7 + x) = 0 (-10 + 2x + (-5x + x2))(-7 + x) = 0 Combine like terms: 2x + -5x = -3x (-10 + -3x + x2)(-7 + x) = 0 Multiply (-10 + -3x + x2) * (-7 + x) (-10(-7 + x) + -3x * (-7 + x) + x2(-7 + x)) = 0 ((-7 * -10 + x * -10) + -3x * (-7 + x) + x2(-7 + x)) = 0 ((70 + -10x) + -3x * (-7 + x) + x2(-7 + x)) = 0 (70 + -10x + (-7 * -3x + x * -3x) + x2(-7 + x)) = 0 (70 + -10x + (21x + -3x2) + x2(-7 + x)) = 0 (70 + -10x + 21x + -3x2 + (-7 * x2 + x * x2)) = 0 (70 + -10x + 21x + -3x2 + (-7x2 + x3)) = 0 Combine like terms: -10x + 21x = 11x (70 + 11x + -3x2 + -7x2 + x3) = 0 Combine like terms: -3x2 + -7x2 = -10x2 (70 + 11x + -10x2 + x3) = 0 Solving 70 + 11x + -10x2 + x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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