सरल कीजिए
`(1+2i)/(1-2i)-(1-2i)/(1+2i)`

Explanation

`(1+2i)/(1-2i)-(1-2i)/(1+2i)`
`=((1+2i)^(2)-(1-2i)^(2))/((1-2i)(1+2i))`
`= ((1+4i^(2)+4i)-(1+4i^(2)-4i))/(1-4i^(2))`
`=(8i)/(1+4)=8/5 i=0+8/5 i`