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Simplifying (3 + 2i)(2 + 5i) = 0 Multiply (3 + 2i) * (2 + 5i) (3(2 + 5i) + 2i * (2 + 5i)) = 0 ((2 * 3 + 5i * 3) + 2i * (2 + 5i)) = 0 ((6 + 15i) + 2i * (2 + 5i)) = 0 (6 + 15i + (2 * 2i + 5i * 2i)) = 0 (6 + 15i + (4i + 10i2)) = 0 Combine like terms: 15i + 4i = 19i (6 + 19i + 10i2) = 0 Solving 6 + 19i + 10i2 = 0 Solving for variable 'i'. Factor a trinomial. (3 + 2i)(2 + 5i) = 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 '(2 + 5i)' equal to zero and attempt to solve: Simplifying 2 + 5i = 0 Solving 2 + 5i = 0 Move all terms containing i to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 5i = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 5i = 0 + -2 5i = 0 + -2 Combine like terms: 0 + -2 = -2 5i = -2 Divide each side by '5'. i = -0.4 Simplifying i = -0.4Solution
i = {-1.5, -0.4}
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