a= 2002. (200+2)= 2002.2000+ 4004
b= 2000.(2002+2)= 2000.2002+4000
Vậy a>b
a=2002.(200+2)=2002.2000+4004
b=2000.(2002+2)=2000.2002+4000
Vậy a > b
\(a = 2002 . 2002 \)
\(= 2002 . ( 2000 + 2 ) \)
\(= 2002 . 2000 + 2002 . 2\)
\(b = 2000 . 2004 \)
\(= 2000 . ( 2002 + 2 ) \)
\(= 2000 . 2002 + 2000 . 2 \)
Ta thấy:
\( 2002 . 2000 = 2000 . 2002 \) mà \(2 . 2002 > 2000 . 2\)
\(\Rightarrow\)\( 2002 . 2000 + 2 . 2002 > 2000 . 2002 + 2 . 2000 \)
Vậy \(a>b\)
a = 2002. (200+2) = 2002.2000 + 4004
b = 2000. (2002+2) = 2000.2002+4000
Vậy a > b
a= 2002. (200+2)= 2002.2000+ 4004
b= 2000.(2002+2)= 2000.2002+4000
Vậy a>b
a=2002.2002=2002(2000+2)=2002.2000+4004
b=2000.2004=2000(2002+2)=2002.2000+4000
Vì: 4004>4000, nên a>b.