Question

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So sanh A va B ma khong tinh cu the gia tri cua chung :

A=2002.2002

(Goi y : a=(2002+2).2002)

B=2000.2004

B=2000.(2002+2)

Answer 1

[Nguyễn Anh Thư]

A=2002.2002

A=(2000+2).2002

A=2000.2002+2002.2

B=2000.2004

B=2000.(2002+2)

B=2000.2002+2000.2

Vì 2000.2002=2000.2004; 2002.2>2000.2

=>2000.2002+2002.2> 2000.2004+2000.2

hay A>B

Vậy A>B