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Simplifying (x + 3)(x + 9)(-3x + 7) = 0 Reorder the terms: (3 + x)(x + 9)(-3x + 7) = 0 Reorder the terms: (3 + x)(9 + x)(-3x + 7) = 0 Reorder the terms: (3 + x)(9 + x)(7 + -3x) = 0 Multiply (3 + x) * (9 + x) (3(9 + x) + x(9 + x))(7 + -3x) = 0 ((9 * 3 + x * 3) + x(9 + x))(7 + -3x) = 0 ((27 + 3x) + x(9 + x))(7 + -3x) = 0 (27 + 3x + (9 * x + x * x))(7 + -3x) = 0 (27 + 3x + (9x + x2))(7 + -3x) = 0 Combine like terms: 3x + 9x = 12x (27 + 12x + x2)(7 + -3x) = 0 Multiply (27 + 12x + x2) * (7 + -3x) (27(7 + -3x) + 12x * (7 + -3x) + x2(7 + -3x)) = 0 ((7 * 27 + -3x * 27) + 12x * (7 + -3x) + x2(7 + -3x)) = 0 ((189 + -81x) + 12x * (7 + -3x) + x2(7 + -3x)) = 0 (189 + -81x + (7 * 12x + -3x * 12x) + x2(7 + -3x)) = 0 (189 + -81x + (84x + -36x2) + x2(7 + -3x)) = 0 (189 + -81x + 84x + -36x2 + (7 * x2 + -3x * x2)) = 0 (189 + -81x + 84x + -36x2 + (7x2 + -3x3)) = 0 Combine like terms: -81x + 84x = 3x (189 + 3x + -36x2 + 7x2 + -3x3) = 0 Combine like terms: -36x2 + 7x2 = -29x2 (189 + 3x + -29x2 + -3x3) = 0 Solving 189 + 3x + -29x2 + -3x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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