16-07-2014
Mathematics

contestada

Perform the indicated operation and write in standard form 5i+(-9-i)

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konrad509 konrad509

16-07-2014

[tex]5i+(-9-i)=\\ 5i-9-i=\\ -9+4i[/tex]

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16-07-2014

Since the sign before the parentheses is a + , we can just remove the parentheses.

5i + (-9 - i) = 5i - 9 - i = -9 + 4i

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