Explain why left begin

2. Evaluate the following limits.

$$\lim_{x \rightarrow 1}\left\{ \frac{2x - 2}{x + 4} \right\}$$

$$\lim_{x \rightarrow - 1}\left\{ \frac{x^{2} + 9x + 8}{x^{2} - 6x - 7} \right\}$$

3. Evaluate the following limits.

1. lim_{x → 0⁺}{f(x)}

2. lim_{x → 0⁻}{f(x)}

1. lim_{x → 1⁻}{f(x)}

2. lim_{x → 1⁺}{f(x)}

1. lim_{x → b⁻}{f(x)}

2. lim_{x → b⁺}{f(x)}

1. x = 0

2. x = 1

9. Numerically approximate the following limits.

$$f(x) = \frac{x^{2} + 5x - 36}{x^{3} - 5x^{2} + 3x + 9}$$

$$f(x) = \frac{x^{2} - 9x + 18}{x^{2} - x - 6}$$

1. lim_{x → 3⁻}{f(x)}