Let $x = -1$. Find $$x + x^2 + x^3 + \cdots + x^{2010} + x^{2011}.$$
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Let $x = -1$. Find $$x + x^2 + x^3 + \cdots + x^{2010} + x^{2011}.$$
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
-1
Let $x = -1$. Find $$x + x^2 + x^3 + \cdots + x^{2010} + x^{2011}.$$
train