---
title: "If x-1 / x = 3, then value of x3 - 1/x3  is ?"  
description: "If x-1 / x = 3, then value of x3 - 1/x3  is ?"  
author: "Aditya Patel"  
published: 2019-09-18  
canonical: https://answers.mindstick.com/qa/72346/if-x-1-x-3-then-value-of-x3-1-x3-is  
category: "math"  
tags: ["mathematics", "mathematical analysis"]  
reading_time: 1 minute  

---

# If x-1 / x = 3, then value of x3 - 1/x3  is ?

If x-1 / x = 3, then [value](https://www.mindstick.com/articles/23219/an-optimized-description-adds-value-to-experience-and-in-turn-effectively-guest-posting-packages) of x3 - 1/x3 is:

a) 32

b) 36

c) 40

d) 49

## Answers

### Answer by Sanat Shukla

Answer -- The right option is (b)

Explain -

![If x-1 / x = 3, then value of x3 - 1/x3  is ?](https://answers.mindstick.com/questionanswer/e5d67315-3680-4a1e-903f-4c5a97acd892/images/5265b61e-6102-4420-934e-30270ff42790.jpeg)


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Original Source: https://answers.mindstick.com/qa/72346/if-x-1-x-3-then-value-of-x3-1-x3-is

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