1.

X-1/x=2 then x6-1/x6​

Answer»

ANSWER:

CORRECT OPTION is

D

322

x+x1=3

x3+x31+3(x+x1)=27

x3+x31=27−9=18

(x3+x31)2=(x6+x61+2)

Now, x6+x61+2=324

x6+x61=322



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