Limit x mendekati 4 akar x+5-akar 2x+1 per x-4

[tex] \frac{ \sqrt{x+5} - \sqrt{2x+1} }{x-4} = \frac{ \sqrt{4+5} - \sqrt{2x4+1} }{4-4} = \frac{ \sqrt{9} - \sqrt{9} }{0} = \frac{0}{0} = 1 [/tex] (limit)

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