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निम्न को सरल कीजिए: (a) ((1 + i)^(2) +...

निम्न को सरल कीजिए:
(a) `((1 + i)^(2) + (1 -i)^(2))/((1 + i)^(2) - (1 -i)^(2)))` (b) `(1 +i)/(1 -i) - (1-i)/(1 + i)`
(c) `(1 -i) (1 +i)` (d) `(sqrt3 + isqrt12) + (sqrt2 - sqrt3i)`

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