Question

Solve this question step by step​

Answer 1

Step-by-step explanation:

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Answer 2

Answer: 140

x - 1/x = 5

( x - 1/x)³ = (5)³

x³ - 1/x³ - 3 ( x - 1/x ) = 125

x³ - 1/x³ - 3 ( 5 ) = 125

x³ - 1/x³ - 15 = 125

x³ - 1/x³ = 125 + 15

x³ - 1/x³ = 140

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