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Simplifying (3 + 3i)(6 + i) = x Multiply (3 + 3i) * (6 + i) (3(6 + i) + 3i * (6 + i)) = x ((6 * 3 + i * 3) + 3i * (6 + i)) = x ((18 + 3i) + 3i * (6 + i)) = x (18 + 3i + (6 * 3i + i * 3i)) = x (18 + 3i + (18i + 3i2)) = x Combine like terms: 3i + 18i = 21i (18 + 21i + 3i2) = x Solving 18 + 21i + 3i2 = x Solving for variable 'i'. Combine like terms: x + -1x = 0 18 + 21i + 3i2 + -1x = 0 The solution to this equation could not be determined.
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