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Column I, Column II (one of the values of `z` ) `z^4-1=0` , p. `z=cospi/8+isinpi/8` `z^4+1=0` , q. `z=cospi/8-isinpi/8` `i z^4+1=0` , r. `z=cospi/4isinpi/4` `i z^4-1=0` , s. `z=cos0+isin0`

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CENGAGE ENGLISH-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-All Questions
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