T
touyen_touyen84


bài 1: lim (x-->0){ căn(3x+4) -2}/{3-căn(4x+9)}
bài 2: lim (x-->0) {căn(2x+1)-x^2 +3x-1)}/{x}
bài 2: lim (x-->0) {căn(2x+1)-x^2 +3x-1)}/{x}
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