Question

so sánh:

A=2017.2019 và B=\(2018^2\)

Answer 1

\(A=\left(2018-1\right)\left(2018+1\right)\)

\(=2018^2-1< 2018^2\)

Vậy A < B.

Answer 2

Ta có: \(A=2017.2019=\left(2018-1\right)\left(2018+1\right)=2018^2-1\)

\(B=2018^2\)

=> \(A< B\)

Answer 3

A>B

Answer 4

sai rui , a nho hon moi dung nha

Answer 5

\(A=2017.2019=\left(2018-1\right)\left(2018+1\right)=2018^2-1< 2018^2\)

Vậy \(A< B\)