Identify the Maclaurin series for f(x)=11+x+x2f(x) = \frac{1}{1+x+x^2}f(x)=1+x+x21.
∑(x3n−x3n+1)\sum (x^{3n} - x^{3n+1})∑(x3n−x3n+1)
∑(−1)nxn\sum (-1)^n x^n∑(−1)nxn
∑(x3n+x3n+1)\sum (x^{3n} + x^{3n+1})∑(x3n+x3n+1)
∑(x3n+1−x3n+2)\sum (x^{3n+1} - x^{3n+2})∑(x3n+1−x3n+2)