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Simplifying (4 + 6i)(8 + -2i) = 0 Multiply (4 + 6i) * (8 + -2i) (4(8 + -2i) + 6i * (8 + -2i)) = 0 ((8 * 4 + -2i * 4) + 6i * (8 + -2i)) = 0 ((32 + -8i) + 6i * (8 + -2i)) = 0 (32 + -8i + (8 * 6i + -2i * 6i)) = 0 (32 + -8i + (48i + -12i2)) = 0 Combine like terms: -8i + 48i = 40i (32 + 40i + -12i2) = 0 Solving 32 + 40i + -12i2 = 0 Solving for variable 'i'. Factor out the Greatest Common Factor (GCF), '4'. 4(8 + 10i + -3i2) = 0 Factor a trinomial. 4((4 + -1i)(2 + 3i)) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(4 + -1i)' equal to zero and attempt to solve: Simplifying 4 + -1i = 0 Solving 4 + -1i = 0 Move all terms containing i to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1i = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1i = 0 + -4 -1i = 0 + -4 Combine like terms: 0 + -4 = -4 -1i = -4 Divide each side by '-1'. i = 4 Simplifying i = 4Subproblem 2
Set the factor '(2 + 3i)' equal to zero and attempt to solve: Simplifying 2 + 3i = 0 Solving 2 + 3i = 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 + 3i = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3i = 0 + -2 3i = 0 + -2 Combine like terms: 0 + -2 = -2 3i = -2 Divide each side by '3'. i = -0.6666666667 Simplifying i = -0.6666666667Solution
i = {4, -0.6666666667}
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