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OpenStudy (osanseviero):
How to demostrate that z+(-z)=0 in complex numbers
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OpenStudy (osanseviero):
I've done two things: a +bi+ (-a -bi)= 0 And z-z+z=0+z a+bi=a+bi+0 a+bi+a+bi
OpenStudy (osanseviero):
I think I need something else
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