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5. The conjugate of 1/ (2+i) is A. ...
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5. The conjugate of 1/ (2+i) is A. (2+i)/5 B. (2-i)/5 C.5/(2-) D.5/(2+i)
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congugate of ( frac{1}{2+i}=frac{(2-i)}{(2+i)(2-i)} ) ( frac{-frac{(2-i)}{4-i^{2}}}{frac{2-i}{5}} )
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