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OpenStudy (anonymous):
Common denominator of 4-i and i. I think this question is simple but I didn't get the answer I should've.
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OpenStudy (anonymous):
4i+1 is one possible one. Another possibility is to multiply the first term by the conjugate 4+i and the second by i. This will completely remove the i's from the denominator.
OpenStudy (anonymous):
I wasn't aware I had to remove the imaginary numbers.
OpenStudy (anonymous):
After all the imagianry numbers are removed, how would I subtract then?
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