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(2 + 5i)(2 + i) please help me to understand how to do it
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(2 + 5i)(2 + i)

please help me to understand how to do it

User Garrette
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1 Answer

1 vote
(2 + 5i)(2 + i)
= 4 + 10i + 2i + 5i^2
= 4 + 12i + 5i^2
User Kshirish
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