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Simplifying (x + 7)(x + 4)(x + -5) = 0 Reorder the terms: (7 + x)(x + 4)(x + -5) = 0 Reorder the terms: (7 + x)(4 + x)(x + -5) = 0 Reorder the terms: (7 + x)(4 + x)(-5 + x) = 0 Multiply (7 + x) * (4 + x) (7(4 + x) + x(4 + x))(-5 + x) = 0 ((4 * 7 + x * 7) + x(4 + x))(-5 + x) = 0 ((28 + 7x) + x(4 + x))(-5 + x) = 0 (28 + 7x + (4 * x + x * x))(-5 + x) = 0 (28 + 7x + (4x + x2))(-5 + x) = 0 Combine like terms: 7x + 4x = 11x (28 + 11x + x2)(-5 + x) = 0 Multiply (28 + 11x + x2) * (-5 + x) (28(-5 + x) + 11x * (-5 + x) + x2(-5 + x)) = 0 ((-5 * 28 + x * 28) + 11x * (-5 + x) + x2(-5 + x)) = 0 ((-140 + 28x) + 11x * (-5 + x) + x2(-5 + x)) = 0 (-140 + 28x + (-5 * 11x + x * 11x) + x2(-5 + x)) = 0 (-140 + 28x + (-55x + 11x2) + x2(-5 + x)) = 0 (-140 + 28x + -55x + 11x2 + (-5 * x2 + x * x2)) = 0 (-140 + 28x + -55x + 11x2 + (-5x2 + x3)) = 0 Combine like terms: 28x + -55x = -27x (-140 + -27x + 11x2 + -5x2 + x3) = 0 Combine like terms: 11x2 + -5x2 = 6x2 (-140 + -27x + 6x2 + x3) = 0 Solving -140 + -27x + 6x2 + x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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