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Simplifying (3 + -4i)(5 + 2i) = 0 Multiply (3 + -4i) * (5 + 2i) (3(5 + 2i) + -4i * (5 + 2i)) = 0 ((5 * 3 + 2i * 3) + -4i * (5 + 2i)) = 0 ((15 + 6i) + -4i * (5 + 2i)) = 0 (15 + 6i + (5 * -4i + 2i * -4i)) = 0 (15 + 6i + (-20i + -8i2)) = 0 Combine like terms: 6i + -20i = -14i (15 + -14i + -8i2) = 0 Solving 15 + -14i + -8i2 = 0 Solving for variable 'i'. Factor a trinomial. (3 + -4i)(5 + 2i) = 0Subproblem 1
Set the factor '(3 + -4i)' equal to zero and attempt to solve: Simplifying 3 + -4i = 0 Solving 3 + -4i = 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 + -4i = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -4i = 0 + -3 -4i = 0 + -3 Combine like terms: 0 + -3 = -3 -4i = -3 Divide each side by '-4'. i = 0.75 Simplifying i = 0.75Subproblem 2
Set the factor '(5 + 2i)' equal to zero and attempt to solve: Simplifying 5 + 2i = 0 Solving 5 + 2i = 0 Move all terms containing i to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 2i = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 2i = 0 + -5 2i = 0 + -5 Combine like terms: 0 + -5 = -5 2i = -5 Divide each side by '2'. i = -2.5 Simplifying i = -2.5Solution
i = {0.75, -2.5}
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