t^2 + t^-2 =?

Question

help!

Answer 1

t^2 + t^-2 =?

c
1st step to simlify it!


t^2 + (1/t^2)

[ t^2 X t^2 + 1 ]/ t^2

[t^4+1]/ t^2

n u r done ;)

Answer 2

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