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Mathematics, 13.09.2021 02:50 darajeanty2004p7cu4m

(7 - 9i)(12 + 3i)(-5 - 3i)

I know the answer is -816 + 102i but I need help with the steps

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(7 - 9i)(12 + 3i)(-5 - 3i)

I know the answer is -816 + 102i but I need help with the ste...
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