Question

If a + 1/a = 2 ; find:

1) a^4+1/a^2

2) a^8 + 1/ a^4
Plz answer fast

Answer 1

Answer:

1) 2

2) 2

Step-by-step explanation:

First we find the value of a:

a^2+1=2a

Splitting the middle term we get,

a=1

Now substituting a with the corresponding questions, we get

1) (1)^4 + 1/(1)^2

=1 + 1=2

2) (1)^8 + 1/(1)^4

= 1+1 = 2