Find the Taylor polynomial T3(x) for the function f centered

Find the Taylor polynomial $T3\left(x\right)$ for the function f centered at the number a.

$T3\left(x\right)=$?
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$f\left(x\right)=x+{e}^{-x}f\left(0\right)=1$

The Taulor polynomial to the 3rd degree is
$1+\frac{{x}^{2}}{2}-\frac{{x}^{3}}{6}$
Graph $x+{e}^{-x}$ and $1+\frac{{x}^{2}}{2}-\frac{{x}^{3}}{6}$ on your calculator and the y-interepts should be same