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OpenStudy (alex136):
Write the expression (3 − 9i) + (4 + 5i) as a complex number in standard form.?
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OpenStudy (alex136):
I think the answer is 7-4i. Am I correct?
OpenStudy (wendy.ivette11714):
You can just remove the parenthesis and simplify by gathering like terms and you go from 3 - 9i + 4 + 5i = 3 + 4 + 5i - 9i (commutative property of addition) = 7 - 4i Yes you are correct :)
OpenStudy (alex136):
Thank you :)
OpenStudy (wendy.ivette11714):
Your Welcome :)
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