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25-07-2018
Mathematics

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Perform the indicated operation and write the results in the form a+bi

Perform the indicated operation and write the results in the form abi class=

Respuesta :

29-07-2018

[tex]i=\sqrt{-1}\to i^2=-1\\\\i^{84}=i^{2\cdot42}=(i^2)^{42}=(-1)^{42}=1[/tex]

Answer: b. 1

Used:

[tex](a^n)^m=a^{nm}[/tex]

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