Lim (х³+х-5) = 27+3-5=25
х→3
lim (х³+х+1) = -1-1+1= -1
х→ -1
lim (2х³-5х²+х-4)=-2-5-1-5=-12
х→ -1
lim (3х³+х²-8х+10) = 0+0-0+10 = 10
х→0
lim (х-3)/ (х²-9) = lim ( (х-3) / (х-3)(х+3) = lim ( 1/ х+3) = 1/6
х→3
lim (4х²-9)/ 2х+3= lim ( (2х-3)(2х+3) / (2х+3) = lim 2х-3 = -6
х→-3/2
lim ( х²-7х+10)/(х²-9х+20) = lim ( (х-5)(х-2) / (х-5)(х-4) = lim ( х-2)/ (х-4) = 5-2 / 5-4= 3
х→5
lim (3х²-8х+4)/5х²-14х+8)= lim (х-2)(х-4/6)/(х-2)(х-8/10)= 2-4/6 / 2-8/10=5/6
х→2