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Simplifying (-3 + 7i)(1 + -3i) = 0 Multiply (-3 + 7i) * (1 + -3i) (-3(1 + -3i) + 7i * (1 + -3i)) = 0 ((1 * -3 + -3i * -3) + 7i * (1 + -3i)) = 0 ((-3 + 9i) + 7i * (1 + -3i)) = 0 (-3 + 9i + (1 * 7i + -3i * 7i)) = 0 (-3 + 9i + (7i + -21i2)) = 0 Combine like terms: 9i + 7i = 16i (-3 + 16i + -21i2) = 0 Solving -3 + 16i + -21i2 = 0 Solving for variable 'i'. Factor a trinomial. (-3 + 7i)(1 + -3i) = 0Subproblem 1
Set the factor '(-3 + 7i)' equal to zero and attempt to solve: Simplifying -3 + 7i = 0 Solving -3 + 7i = 0 Move all terms containing i to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + 7i = 0 + 3 Combine like terms: -3 + 3 = 0 0 + 7i = 0 + 3 7i = 0 + 3 Combine like terms: 0 + 3 = 3 7i = 3 Divide each side by '7'. i = 0.4285714286 Simplifying i = 0.4285714286Subproblem 2
Set the factor '(1 + -3i)' equal to zero and attempt to solve: Simplifying 1 + -3i = 0 Solving 1 + -3i = 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 + -3i = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3i = 0 + -1 -3i = 0 + -1 Combine like terms: 0 + -1 = -1 -3i = -1 Divide each side by '-3'. i = 0.3333333333 Simplifying i = 0.3333333333Solution
i = {0.4285714286, 0.3333333333}
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