вид 0/0
limx->3 (x^2-9)/x-3=limx->3 ((x-3)(x+3))/x-3=limx->3 (x+3)=3+3=6
(x-3)(x+3)/(x-3)= x+3=3+3=6
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вид 0/0
limx->3 (x^2-9)/x-3=limx->3 ((x-3)(x+3))/x-3=limx->3 (x+3)=3+3=6
(x-3)(x+3)/(x-3)= x+3=3+3=6