x^2+1/x^2=27 find the value of x^3-1/x^3
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Answer:
(x-1/x)²= 27-2*x*1/x = 25
(x+1/x)=5
x³ - (1/x³)
= {x-(1/x)}³ - 3*x*(1/x){x+(1/x)}
= (5)³-3×5
= 125 -15
=110
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