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04-05-2020
Mathematics

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When you multiply (-10+-8i)(1+9i). you get an answer of the form a+bi. Find b.

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CEcherie CEcherie

25-11-2021

Answer:b=-98

Step-by-step explanation:

(-10+-8i)(1+9i)=-10-90i-8i-72(-1)

=-10-98i+72

=62+-98i

Hence, a+bi=62+-98i

b=-98

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