X-1/x = √3 . find x^3 -1/x^3
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x−x1=−3
Cubing both sides, we get
x3−x31−3(x−x1)=−33
or x3−x31−3(−3)=−33
or x3−x31+33=−33
or x3−x31=−63
x−x1=−3
Cubing both sides, we get
x3−x31−3(x−x1)=−33
or x3−x31−3(−3)=−33
or x3−x31+33=−33
or x3−x31=−63
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