$\lim _{x \rightarrow 3} \frac{x^{3}-27}{x-3}$ (A) Explain Why Direct Substitution Cannot Be Used to Find

question 32

Essay

$\lim _{x \rightarrow 3} \frac{x^{3}-27}{x-3}$
(a) Explain why direct substitution cannot be used to find the limit.
(b) Find the limit algebraically, if it exists.

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