There exist several positive integers $x$ such that $\frac{1}{x^2+x}$ is a terminating decimal. What is the second smallest such integer?
Question:
There exist several positive integers $x$ such that $\frac{1}{x^2+x}$ is a terminating decimal. What is the second smallest such integer?
Answer:
Let's think step by step.

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There exist several positive integers $x$ such that $\frac{1}{x^2+x}$ is a terminating decimal. What is the second smallest such integer?
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