Question

if a+1/a=9. find the value of a^2+1/a^2.​

Answer 1

Step-by-step explanation:

a+1/a = 9

So

a+1=9a

1=9a-a

8a=1

a=1/8

a^2= 1/64

1/64+1=65/64

65/64÷1/64

=65

Answer 2

Answer:

answer is 79

Step-by-step explanation:

a+1/a=9

squaring on both sides then you will get

a²+1/a²+2(a)(1/a) =81

a²+1/a² =81-2

a²+1/a²=79