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OpenStudy (anonymous):
Write the expression (3 − 9i) + (4 + 5i) as a complex number in standard form
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OpenStudy (unklerhaukus):
\[=(3+4)+(-9+5)i\]
OpenStudy (anonymous):
7-14i?
OpenStudy (unklerhaukus):
\[(-9+5)=-4\]
OpenStudy (anonymous):
oh okay 7-4i
OpenStudy (unklerhaukus):
that is right
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OpenStudy (anonymous):
thank you
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