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Simplifying (5x + -7)(x + -4)(3 + x) = 0 Reorder the terms: (-7 + 5x)(x + -4)(3 + x) = 0 Reorder the terms: (-7 + 5x)(-4 + x)(3 + x) = 0 Multiply (-7 + 5x) * (-4 + x) (-7(-4 + x) + 5x * (-4 + x))(3 + x) = 0 ((-4 * -7 + x * -7) + 5x * (-4 + x))(3 + x) = 0 ((28 + -7x) + 5x * (-4 + x))(3 + x) = 0 (28 + -7x + (-4 * 5x + x * 5x))(3 + x) = 0 (28 + -7x + (-20x + 5x2))(3 + x) = 0 Combine like terms: -7x + -20x = -27x (28 + -27x + 5x2)(3 + x) = 0 Multiply (28 + -27x + 5x2) * (3 + x) (28(3 + x) + -27x * (3 + x) + 5x2 * (3 + x)) = 0 ((3 * 28 + x * 28) + -27x * (3 + x) + 5x2 * (3 + x)) = 0 ((84 + 28x) + -27x * (3 + x) + 5x2 * (3 + x)) = 0 (84 + 28x + (3 * -27x + x * -27x) + 5x2 * (3 + x)) = 0 (84 + 28x + (-81x + -27x2) + 5x2 * (3 + x)) = 0 (84 + 28x + -81x + -27x2 + (3 * 5x2 + x * 5x2)) = 0 (84 + 28x + -81x + -27x2 + (15x2 + 5x3)) = 0 Combine like terms: 28x + -81x = -53x (84 + -53x + -27x2 + 15x2 + 5x3) = 0 Combine like terms: -27x2 + 15x2 = -12x2 (84 + -53x + -12x2 + 5x3) = 0 Solving 84 + -53x + -12x2 + 5x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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