For how many values of $x$ is the function $y=\frac{x-2}{x^2-7x+10}$ not defined?
Question:
For how many values of $x$ is the function $y=\frac{x-2}{x^2-7x+10}$ not defined?
Answer:
Let's think step by step.

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For how many values of $x$ is the function $y=\frac{x-2}{x^2-7x+10}$ not defined?
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