The operation $\star$ is defined as $a \star b = a^2 \div b$. For how many integer values of $x$ will the value of $10 \star x$ be a positive integer?
Question:
The operation $\star$ is defined as $a \star b = a^2 \div b$. For how many integer values of $x$ will the value of $10 \star x$ be a positive integer?
Answer:
Let's think step by step.

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The operation $\star$ is defined as $a \star b = a^2 \div b$. For how many integer values of $x$ will the value of $10 \star x$ be a positive integer?
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