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If p+iq = sqrt(frac{a+ib}{c+id}), then p...

If `p+iq = sqrt(frac{a+ib}{c+id})`, then p,q,a,b,c,d in R, then `(p^2+q^2)^2 = ``

A

`sqrt(frac{a^2+b^2}{c^2+d^2})`

B

`frac{a^2+b^2}{c^2+d^2}`

C

`[frac{a^2+b^2}{c^2+d^2}]^2`

D

none of these

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