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Simplifying (1 + 2i)(7 + -3i) = 0 Multiply (1 + 2i) * (7 + -3i) (1(7 + -3i) + 2i * (7 + -3i)) = 0 ((7 * 1 + -3i * 1) + 2i * (7 + -3i)) = 0 ((7 + -3i) + 2i * (7 + -3i)) = 0 (7 + -3i + (7 * 2i + -3i * 2i)) = 0 (7 + -3i + (14i + -6i2)) = 0 Combine like terms: -3i + 14i = 11i (7 + 11i + -6i2) = 0 Solving 7 + 11i + -6i2 = 0 Solving for variable 'i'. Factor a trinomial. (7 + -3i)(1 + 2i) = 0Subproblem 1
Set the factor '(7 + -3i)' equal to zero and attempt to solve: Simplifying 7 + -3i = 0 Solving 7 + -3i = 0 Move all terms containing i to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -3i = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -3i = 0 + -7 -3i = 0 + -7 Combine like terms: 0 + -7 = -7 -3i = -7 Divide each side by '-3'. i = 2.333333333 Simplifying i = 2.333333333Subproblem 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 = {2.333333333, -0.5}
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