Question
यदि $z = 3 + 5i,\,\,$तब $\,{z^3} + \bar z + 198 = $
$ \Rightarrow \,$${z^3} = {(3 + 5i)^3} = {3^3} + {(5i)^3} + 3.3.5i\,(3 + 5i)$
$ = - 198 + 10i$
अत: ${z^3} + \bar z + 198 = 10\,i - 198 + 3 - 5\,i + 198 = 3 + 5\,i$.
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