a) y= 14x^2+ 14x-2020
b) y=(x+14)(x^2-14)
c) y=(x^2-14 căn x+14x-14)^14
d) y=14x+13/14x+23
e) y= sin(14x-14/6x-14)
f) y=sin(tan x^14)
Loga
Sinh Học lớp 12
