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15. 5i(4 - 61)201 + 309i - 1122201 - 30
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15. 5i(4 - 61)201 + 309i - 1122201 - 30

15. 5i(4 - 61)201 + 309i - 1122201 - 30-example-1
User Silvio Delgado
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1 Answer

4 votes

15.


5i(4-6i)=5i*4-(5i)*(6i)
=20i-30(i^2)=20i+30

then the correct option is a.20i+30

User Steve Horn
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