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Simplifying (x + 7)(x + 3)(x + -3) = 0 Reorder the terms: (7 + x)(x + 3)(x + -3) = 0 Reorder the terms: (7 + x)(3 + x)(x + -3) = 0 Reorder the terms: (7 + x)(3 + x)(-3 + x) = 0 Multiply (7 + x) * (3 + x) (7(3 + x) + x(3 + x))(-3 + x) = 0 ((3 * 7 + x * 7) + x(3 + x))(-3 + x) = 0 ((21 + 7x) + x(3 + x))(-3 + x) = 0 (21 + 7x + (3 * x + x * x))(-3 + x) = 0 (21 + 7x + (3x + x2))(-3 + x) = 0 Combine like terms: 7x + 3x = 10x (21 + 10x + x2)(-3 + x) = 0 Multiply (21 + 10x + x2) * (-3 + x) (21(-3 + x) + 10x * (-3 + x) + x2(-3 + x)) = 0 ((-3 * 21 + x * 21) + 10x * (-3 + x) + x2(-3 + x)) = 0 ((-63 + 21x) + 10x * (-3 + x) + x2(-3 + x)) = 0 (-63 + 21x + (-3 * 10x + x * 10x) + x2(-3 + x)) = 0 (-63 + 21x + (-30x + 10x2) + x2(-3 + x)) = 0 (-63 + 21x + -30x + 10x2 + (-3 * x2 + x * x2)) = 0 (-63 + 21x + -30x + 10x2 + (-3x2 + x3)) = 0 Combine like terms: 21x + -30x = -9x (-63 + -9x + 10x2 + -3x2 + x3) = 0 Combine like terms: 10x2 + -3x2 = 7x2 (-63 + -9x + 7x2 + x3) = 0 Solving -63 + -9x + 7x2 + x3 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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