Question

[Nhật Ánh]

khong quy dong hay so sanh 

 A=-9/10²⁰¹⁰+-19/10²⁰¹¹ ; B-9/10²⁰¹¹+ -19/10²⁰¹⁰

Answer 1

[trần mi sa]

A=10.(-9)/10^2010+-19/10^2011 =-90/10^2011+-19/10^2011 =-109/10^2011 B=-9/10^2011+10.-19/10^2010 =-9/10^2011+-190/10^2011 =-199/10^2011 Vì -109/10^2011>-199/10^2011 Nên: A>B