1/ lim x->2 (1/2-x)-(12/8-x^3)2/ lim x->-2 [(x+1)^2-2(1+x)-3]/[(x+1)^3+2(x+1)^2-1]3/ lĩm x->2 [(x^2-x-2)^2]/(x^3-12x+16)4/ lim x->căn 2 (x^2-2)/(x^2-x+căn 2 -2)
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