Lim x----->3
3x^2-5x-12/x^2-9
(3x+4)(x-3)/(x-3)(x+3)
(3x+4)/(x+3)
(3*3+4)/(3+3)=13/6
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Lim x----->3
3x^2-5x-12/x^2-9
Lim x----->3
(3x+4)(x-3)/(x-3)(x+3)
Lim x----->3
(3x+4)/(x+3)
(3*3+4)/(3+3)=13/6