SOLUTION: Write the expression (3 − 9i) + (4 + 5i) as a complex number in standard form.

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Question 740834: Write the expression (3 − 9i) + (4 + 5i) as a complex number in standard form.
Found 2 solutions by solver91311, lynnlo:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


To add two complex numbers, add the real parts and then add the coefficients of the imaginary parts.



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Answer by lynnlo(4176) About Me  (Show Source):
You can put this solution on YOUR website!
(3-9i)+(4+5i)
3+4============7
9i-5i==========4i
=====7-4i