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Solve x^(9)-x^(5)+x^(4)-1=0

Answer»


ANSWER :`x=cos.(2kpi)/(4)+ISIN.(2kpi)/(4)` `k=0,1,2,3`
`x=cos.((2k+1)PI)/(5)+isin((2k+1)pi)/(5)` `k=0,1,2,3` and `4`


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