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Evaluate: `lim_(xrarr3) (x^(2)-4x+3)/(x^(2)+6x- 27)`

Answer» `underset(xrarr3) "lim"(x^(2)-4x+3)/(x^(2)+6x-27)`
`= underset(xrarr3)"lim"((x-3)(x-1))/((x-3)(x+9))`
`=underset(xrarr3)"lim"(X-1)/(x+9)=(3-1)/(3+9)`
`=(2)/(12)=(1)/(6)`.


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