Answer:

a+1/a=3

we know,

(a+1/a)²= a²+1/a² +2

or; 3²-2= a²+1/a²

or; a²+1/a²= 9-2

or; a²+1/a²= 7

Step-by-step explanation:

it's 100% correct please mark it as brainliest and follow me ...

Step-by-step explanation:

a+1/a=3

we know,

(a+1/a)²= a²+1/a² +2

or; 3²-2= a²+1/a²

or; a²+1/a²= 9-2

or; a²+1/a²= 7

Thnx