SOLUTION: Write each expression as a complex number in the form of a + bi 5i - sq rt of -84 Thank you

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Question 80436: Write each expression as a complex number in the form of a + bi
5i - sq rt of -84
Thank you
Answer by tutorcecilia(2152) About Me  (Show Source):
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5i - sq rt of -84
5i-(84i) [the square root of a negative number is an imaginary number]
5i-84i
-79i