lim 3^n -4.2^n -1 -3/ 3.2^n +4^n bằng6/25lim3n−4.2n−1−33.2n+4n bằng +∞-∞01Giải thíchlim3n−4.2n−1−33.2n+4n=lim3n−2.2n−33.2n+4n=lim34n−2.24n−3.14n3.24n+1=0