Tìm x biết:a) 5/3-2/3.|2x+(-1)^2016|=28/21b) (3x-1)^2=(1-3x)^4c) (3/1.3+3/3.5+...+3/2015.2017):x-(-1)^2017=8/5.2017^0
Đăng ký qua Facebook hoặc Google: