1.

X2+1/x =66find the value of x-1/x​

Answer»

ANSWER:

(X−  

x

1

​  

)  

2

=x  

2

+  

x  

2

 

1

​  

−2×x×  

x

1

​  

 

                  =x  

2

+  

x  

2

 

1

​  

−2

(x−  

x

1

​  

)  

2

=66−2=64

⇒(x−  

x

1

​  

)=8


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