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Inspired by Loomba and Hung Woei

Algebra Level 4

\[ { \begin{cases} a+a^2+a^3+ a^4 + \cdots= 2 \\ a^2+a^3+a^4+ a^5 + \cdots=1 \\ \end{cases}} \]

Given the above, find \(a\).

No solution \[ \frac{1}{2} \] \[2\] \[1\]

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Excel in math and science

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by Calvin Lin

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