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Simplifying (x + 1)(x + -5)(x + -7) = 0 Reorder the terms: (1 + x)(x + -5)(x + -7) = 0 Reorder the terms: (1 + x)(-5 + x)(x + -7) = 0 Reorder the terms: (1 + x)(-5 + x)(-7 + x) = 0 Multiply (1 + x) * (-5 + x) (1(-5 + x) + x(-5 + x))(-7 + x) = 0 ((-5 * 1 + x * 1) + x(-5 + x))(-7 + x) = 0 ((-5 + 1x) + x(-5 + x))(-7 + x) = 0 (-5 + 1x + (-5 * x + x * x))(-7 + x) = 0 (-5 + 1x + (-5x + x2))(-7 + x) = 0 Combine like terms: 1x + -5x = -4x (-5 + -4x + x2)(-7 + x) = 0 Multiply (-5 + -4x + x2) * (-7 + x) (-5(-7 + x) + -4x * (-7 + x) + x2(-7 + x)) = 0 ((-7 * -5 + x * -5) + -4x * (-7 + x) + x2(-7 + x)) = 0 ((35 + -5x) + -4x * (-7 + x) + x2(-7 + x)) = 0 (35 + -5x + (-7 * -4x + x * -4x) + x2(-7 + x)) = 0 (35 + -5x + (28x + -4x2) + x2(-7 + x)) = 0 (35 + -5x + 28x + -4x2 + (-7 * x2 + x * x2)) = 0 (35 + -5x + 28x + -4x2 + (-7x2 + x3)) = 0 Combine like terms: -5x + 28x = 23x (35 + 23x + -4x2 + -7x2 + x3) = 0 Combine like terms: -4x2 + -7x2 = -11x2 (35 + 23x + -11x2 + x3) = 0 Solving 35 + 23x + -11x2 + x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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