sierra73 sierra73

25-10-2017
Mathematics

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9i(4+5i) multiply the following

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altavistard altavistard

25-10-2017

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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