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Mathematics
Addisyn Bell
12 January, 20:39
9i (4+5i) multiply the following
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Desmond Duffy
12 January, 23:34
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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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