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I need help w this please I mark brilliant
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1 vote
I need help w this please I mark brilliant

I need help w this please I mark brilliant-example-1
User Erfan Eghterafi
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1 Answer

7 votes

i²= -1; i⁴=1

7i⁵+9i⁸=7i*i⁴+9(i⁴)²=7i*1+9*1=7i+9

A) 9+7i

User Joel Larson
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6.6k points
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