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Liberty Welch
Mathematics
20 September, 06:29
9i (4+5i) multiply the following
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Omari Marshall
20 September, 06:52
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Recall that i^2 = - 1.
9i (4) = 36i, and 9i (5i) = 45 (-1) = - 45.
Thus, the desired product is - 45 + 36i.
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