X^(1/3) - X^(1/9) =60. Solve for X.

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Dipak Kumar Kole

  • Jul 29th, 2006
 

Let Y=X^(1/9).

Therfore, the given equation is Y^3-Y=60 => (Y-4)(Y^2+4*Y+15)=0=> Y=4 (since,Y^2+4*Y+15 is not equal to zero) =>X=4^9.

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