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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 11: lim x=>1 $\frac{x^3 -2x-1}{x^5-2x-1}$

Toán Lớp 11: lim x=>1 $\frac{x^3 -2x-1}{x^5-2x-1}$