hey guys. could anyone help me out please?

i have this one question but not sure how to do it? any ideas please?

Find the Taylor polynomials the 2nd Taylor polynomian T^(2) f, 0 (X) around 0 for the following functions

i) f(x)=1/1+x

ii) f(x)=sqrt(1+x)

this might sound silly to some people, but please help. i was ill during the lecture so if somebody could help me work this out i could do my homework

thank you

Best Regards

Boomshine57th