Taylor Series help plz...?

Question

Find the Taylor series for f(x) centered at the given value of "a". [Assume that "f" has a power series expansion. Do not show that Rn(x) -> 0].

1) f(x) = 1 + x + x^2, a=2

2) f(x) = 1/sqrt of x, a=9

show work plz..thanks!

Answer 1

f(x) =7 +5(x-2) +(x-2)^2
f(x) = 1/3 -1/2*1/27 (x-9) +(1*3)/*1/3^5*(x-9)^2/2! ++ f^(n)(1/3)/n!*(x-9)^^n*(-1)^n+1