Câu hỏi của maianh chu

Question

ko tính hãy so sánh A  & B A=2019. 2021B=2018. 2022

Nguyễn Lê Phước Thịnh · Accepted Answer

$A=2020^2-1$$B=2020^2-2^2=2020^2-4$Do đó: A>BCâu trả lời:  $A=2020^2-1$$B=2020^2-2^2=2020^2-4$Do đó: A>B

OH-YEAH^^ · Answer

Có: $A=2019.2021=2021.2018+2021>2018.2021+2018=2018.2022=B$Câu trả lời: Có: $A=2019.2021=2021.2018+2021>2018.2021+2018=2018.2022=B$

Rip_Indra · Answer

A=20202−1A=20202−1B=20202−22=20202−4B=20202−22=20202−4Do đó: A>BCâu trả lời:  A=20202−1A=20202−1B=20202−22=20202−4B=20202−22=20202−4Do đó: A>B