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Evaluate the following limit : \(\lim\limits_{\text x \to 3} \) (x2 - 9)\(\left(\cfrac1{\text x+3}+\cfrac1{\text x-3}\right)\)

lim(x→3)(x2 - 9)(1/(x + 3) - 1/(x - 3))

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Since a3 + b3 = (a + b) (a2 + b2- ab) & a- b2 = (a + b) (a - b)

= 6

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