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  1. If a +
    1
    = √3 , then the value of a6 -
    1
    + 2 will be
    aa6

    1. 1
    2. 2
    3. 3√3
    4. 5
Correct Option: B

Using Rule 8,

⇒ a +
1
= √3
a

On cubing both sides,
a +
1
3 = 3√3
a

⇒ a3 +
1
+ 3.a.
1
a +
1
= 3√3
a3aa

⇒ a3 +
1
+ 3√3 - 3√3 = 0
a3

⇒ a3 +
1
= 0 ....(i)
a3

⇒ a6 -
1
+ 2 = ( a3 )2 -
1
2 a3 -
1
+ 2 = 2
a6a3a3



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