Question

Please solve this question correctly ​

Answer 1

Step-by-step explanation:

a-1/a=3

square both side

(a-1/a) ²=3²

a²-2(a) (1/a) +(1/a) ²=9

a²-2+1/a²=9

a²+1/a²= 11

(a+1/a) ²-2=11

(a+1/a) ²=13

(a+1/a) =√13

a²-1/a²=(a+1/a) (a-1/a)

= (√13)(3)

Answer 2

Answer:

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