If x,y,z are different and Delta=|{:(x,x...

If `x,y,z` are different and `Delta=|{:(x,x^(2),1+x^(3)),(y,y^(2),1+y^(3)),(z,z^(2),1+z^(3)):}|=0`, show that :
`(i) 1+xyz=0`
`(ii) xyz=-1`

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