Limit Finding for \lim_{x\to 8}\frac{x-8}{x^{\frac{1}{3}}-2} - Homework Solution

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SUMMARY

The limit of the expression \(\lim_{x\to 8}\frac{x-8}{x^{\frac{1}{3}}-2}\) evaluates to 12. This conclusion is reached by factoring the numerator as \((x^{\frac{1}{3}}-2)(x^{\frac{2}{3}}+2x^{\frac{1}{3}}+4)\) and simplifying the expression. The final limit is computed as \(\lim_{x\to 8}(x^{\frac{2}{3}}+2x^{\frac{1}{3}}+4)\), confirming the result of 12. The discussion highlights the importance of proper factorization in limit evaluation.

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Homework Statement


\lim_{x\to 8}\frac{x-8}{x^{\frac{1}{3}}-2}


Homework Equations


Answer is 12


The Attempt at a Solution


\lim_{x\to 8}\frac{x-8}{x^{\frac{1}{3}}-2}= \lim_{x\to 8}\frac{(x^{\frac{1}{3}}-2)(x^{\frac{2}{3}}+2x^{\frac{1}{3}}+2^2)}{x^{\frac{1}{3}}-2}=\lim_{x\to 8}(x^{\frac{2}{3}}+2x^{\frac{1}{3}}+4)=12
 
Last edited:
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Correct. The latex graphics is not showing everything correctly, though.
 

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