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If x+i y=sqrt((a+i b)/(c+i d)), then wri...

If `x+i y=sqrt((a+i b)/(c+i d)),` then write the value of `(x^2+y^2)^2`.

Text Solution

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`x+i y=sqrt{frac{a+i b}{c+i d}}`
Taking conjugates on both sides we get
`x-i y=sqrt{frac{a-i b}{c-i d}}`
Multiplying (1) and (2) we get
...
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