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Simplifying (-3 + 2i)(1 + -4i) = 0 Multiply (-3 + 2i) * (1 + -4i) (-3(1 + -4i) + 2i * (1 + -4i)) = 0 ((1 * -3 + -4i * -3) + 2i * (1 + -4i)) = 0 ((-3 + 12i) + 2i * (1 + -4i)) = 0 (-3 + 12i + (1 * 2i + -4i * 2i)) = 0 (-3 + 12i + (2i + -8i2)) = 0 Combine like terms: 12i + 2i = 14i (-3 + 14i + -8i2) = 0 Solving -3 + 14i + -8i2 = 0 Solving for variable 'i'. Factor a trinomial. (-3 + 2i)(1 + -4i) = 0Subproblem 1
Set the factor '(-3 + 2i)' equal to zero and attempt to solve: Simplifying -3 + 2i = 0 Solving -3 + 2i = 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 + 2i = 0 + 3 Combine like terms: -3 + 3 = 0 0 + 2i = 0 + 3 2i = 0 + 3 Combine like terms: 0 + 3 = 3 2i = 3 Divide each side by '2'. i = 1.5 Simplifying i = 1.5Subproblem 2
Set the factor '(1 + -4i)' equal to zero and attempt to solve: Simplifying 1 + -4i = 0 Solving 1 + -4i = 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 + -4i = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -4i = 0 + -1 -4i = 0 + -1 Combine like terms: 0 + -1 = -1 -4i = -1 Divide each side by '-4'. i = 0.25 Simplifying i = 0.25Solution
i = {1.5, 0.25}
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