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Simplifying (3 + 3i)(1 + 2i) = 0 Multiply (3 + 3i) * (1 + 2i) (3(1 + 2i) + 3i * (1 + 2i)) = 0 ((1 * 3 + 2i * 3) + 3i * (1 + 2i)) = 0 ((3 + 6i) + 3i * (1 + 2i)) = 0 (3 + 6i + (1 * 3i + 2i * 3i)) = 0 (3 + 6i + (3i + 6i2)) = 0 Combine like terms: 6i + 3i = 9i (3 + 9i + 6i2) = 0 Solving 3 + 9i + 6i2 = 0 Solving for variable 'i'. Factor out the Greatest Common Factor (GCF), '3'. 3(1 + 3i + 2i2) = 0 Factor a trinomial. 3((1 + i)(1 + 2i)) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(1 + i)' equal to zero and attempt to solve: Simplifying 1 + i = 0 Solving 1 + i = 0 Move all terms containing i to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + i = 0 + -1 Combine like terms: 1 + -1 = 0 0 + i = 0 + -1 i = 0 + -1 Combine like terms: 0 + -1 = -1 i = -1 Simplifying i = -1Subproblem 2
Set the factor '(1 + 2i)' equal to zero and attempt to solve: Simplifying 1 + 2i = 0 Solving 1 + 2i = 0 Move all terms containing i to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 2i = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 2i = 0 + -1 2i = 0 + -1 Combine like terms: 0 + -1 = -1 2i = -1 Divide each side by '2'. i = -0.5 Simplifying i = -0.5Solution
i = {-1, -0.5}
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