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5. 4i(-2 - 4i) 6.5i・i・-2i 7. (-5 - 0(1 + i) Operations with Complex Numbers help plz asap​
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5. 4i(-2 - 4i)

6.5i・i・-2i
7. (-5 - 0(1 + i)
Operations with Complex Numbers
help plz asap​

User Iraklisg
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1 Answer

6 votes

Answer:


4i( - 2 - 4i) = - 8i + 16 \\ \\ 5i.i.( - 2i) = 10i \\ \\ (- 5 - i)(1 + i) = -5-5i-i+1\\=-4-6i

User Oadams
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