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Simplifying (2 + i)(7 + -3i) = 0 Multiply (2 + i) * (7 + -3i) (2(7 + -3i) + i(7 + -3i)) = 0 ((7 * 2 + -3i * 2) + i(7 + -3i)) = 0 ((14 + -6i) + i(7 + -3i)) = 0 (14 + -6i + (7 * i + -3i * i)) = 0 (14 + -6i + (7i + -3i2)) = 0 Combine like terms: -6i + 7i = 1i (14 + 1i + -3i2) = 0 Solving 14 + 1i + -3i2 = 0 Solving for variable 'i'. Factor a trinomial. (7 + -3i)(2 + i) = 0Subproblem 1
Set the factor '(7 + -3i)' equal to zero and attempt to solve: Simplifying 7 + -3i = 0 Solving 7 + -3i = 0 Move all terms containing i to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -3i = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -3i = 0 + -7 -3i = 0 + -7 Combine like terms: 0 + -7 = -7 -3i = -7 Divide each side by '-3'. i = 2.333333333 Simplifying i = 2.333333333Subproblem 2
Set the factor '(2 + i)' equal to zero and attempt to solve: Simplifying 2 + i = 0 Solving 2 + i = 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 + i = 0 + -2 Combine like terms: 2 + -2 = 0 0 + i = 0 + -2 i = 0 + -2 Combine like terms: 0 + -2 = -2 i = -2 Simplifying i = -2Solution
i = {2.333333333, -2}
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