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OpenStudy (anonymous):
2 -- 7i
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Nnesha (nnesha):
multiply top and bottom by there conjugate
Nnesha (nnesha):
what is conjugate of 7i ???
OpenStudy (anonymous):
is it just 7i
Nnesha (nnesha):
nope 7i is positive conjugate of 7i should be opposite so its ??
OpenStudy (anonymous):
-7i
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Nnesha (nnesha):
yes right now multiply|dw:1423088114906:dw| multiply numerator by numerator and denominator by denominator
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