Question

Please solve fast. Post only correct answer.
Best of luck.​

Answer 1

Answer:

30

Step-by-step explanation:

or, a^2 - 4a - 1 = 0

or, a^2 - 1/a = 4

or, a - 1/a = 4

or, a^2 + 1/a^2 + 3(a - 1/a)

or, (a-1/a)^2 + 2 + 3(a - 1/a)

or, 4^2 + 2 + 3 x 4 = 30

Therefore, the answer is 30.