# How do you state the excluded values for rational expressions?

Since you cannot divide by zero, the only restriction on rational expressions is that the denominator cannot be zero.

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The excluded values for rational expressions are the values of the variable that would make the denominator equal to zero. To find the excluded values, set the denominator equal to zero and solve the resulting equation. The solutions to this equation are the excluded values.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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