If x - 2/x = 3, find the value of x³ - 8/x³
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Answer:
(x - 2/x)³ = (x)³ - (2/x)³ - 3(x)(2/x)( x - 2x )
=> (3)³ = x³ - 8/x³ - 6(3)
=> x³ - 8/x³ = 27 + 18
=> x³ - 8/x³ = 45 ans.
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