\lim _{x \rightarrow 3} \frac{x^{2}-9}{x-3} – InterviewSolution

1.

\lim _{x \rightarrow 3} \frac{x^{2}-9}{x-3}

Answer»

x^2-9 can be written as (X+3)(x-3)hence limits X tending 3 (X+3)(x-3)/(x-3)as x-3 will be get cancelledput in limits3+3=6

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