Giải:
\(\underset{x\rightarrow +\infty }{lim}\) \(\frac{2x-6}{4-x}\) = \(\underset{x\rightarrow +\infty }{lim}\) \(\frac{2-\frac{6}{x}}{\frac{4}{x}-1} = -2\).
Giải:
\(\underset{x\rightarrow +\infty }{lim}\) \(\frac{2x-6}{4-x}\) = \(\underset{x\rightarrow +\infty }{lim}\) \(\frac{2-\frac{6}{x}}{\frac{4}{x}-1} = -2\).
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