Compute the sum of the geometric series $-1 + 2 - 4 + 8 - \cdots + 512$.
Question:
Compute the sum of the geometric series $-1 + 2 - 4 + 8 - \cdots + 512$.
Answer:
Let's think step by step.

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Compute the sum of the geometric series $-1 + 2 - 4 + 8 - \cdots + 512$.
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