a Vi \(c^{2008}\) chua so mu chan \(\Rightarrow c^{2008}>0\Rightarrow a.b>0\) \(\Rightarrow\) a va b la 2 so nguyen cung dau \(\Rightarrow\) a va b la 2 so nguyen am \(\Rightarrow\) c la so nguyen duong
Vay a;b la so nguyen am;c la so nguyen duong
b,Vi |a|>0\(\Rightarrow\text{|a|}^{2009}>0\Rightarrow b.c>0\Rightarrow\)b va c la 2 so nguyen cung sau \(\Rightarrow\) b va c la 2 so nguyen am \(\Rightarrow\) a la so nguyen duong
Vay b;c la 2 so nguyen am;a la so nguyen duong
Nho tick cho minh nha