1.

`((1)/(1 - 4i) - (2)/(1 + i)) ((3- 4i)/(5 + i))` को मानक रूप में परिवर्तित कीजिए।

Answer» `((1)/(1 - 4i) - (2)/(1 + i)) ((3- 4i)/(5 + i))`
`= [(1 (1 + 4i))/((1 - 4i) (1 + 4i)) - (2(1-i))/((1 + i) ( 1- i))] [((3 - 4i)(5 -i))/((5 + i) (5 -i))]`
`= [(1 + 4i)/(17) - (2 02i)/(2)] ((15 - 20i - 3i - 4)/(26))`
`= [(1 + 8i - 34 + 34i)/(34)] ((1- 23i)/(26))`
`= ((-32 + 42i)/(34)) ((11 - 23i)/(26))`
`= ((-16 + 21i)(11 - 23i))/(17 xx 26)`
`= (-176 + 231i + 368i + 483)/(442)`
`= (307 + 599i)/(442)`


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