# What are the important parts of the equation to graph #f(x) = (x^2 - 1) / (x+1)#?

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The important parts of the equation to graph f(x) = (x^2 - 1) / (x+1) are the numerator (x^2 - 1) and the denominator (x+1).

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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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- How do you simplify #[(x^3 - 1)/(x + 4)][(2x - 7)/(x^2 + 3x + 1)]#?

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