Question

if x-1/x=√5 find the value of x^3+1/x^3
Plz fast​

Answer 1

Answer: 0

Step-by-step explanation: From question x+1/x=√3

x+1/x=√3

Cubing on both LHS and RHS we get,

(x+1/x)  

3

=(√3)  

3

 

X  

3

+(1/x  

3

)+3(x+(1/x))=3√3

x  

3

+1/x  

3

+3(√3)=3√3

By transporting we get

x  

3

+1/x  

3

+3√3−3√3=0

x  

3

+1/x  

3

=0