Question

So sánh A = 2016.2018 và B = 2017²

Answer 1

\(A=2016.2018=\left(2017-1\right)\left(2017+1\right)\)

\(=2017^2-1< 2017^2\)

\(\Rightarrow A< B\)

Vậy A < B

Answer 2

Ta có:

\(A=2016.2018=\left(2017-1\right).\left(2017+1\right)\)

\(=2017^2-1^2=2017^2-1\)

Vì \(2017^2-1< 2017^2\) nên \(2016.2018< 2017^2\)

Do đó \(A< B\)

Chúc bạn học tốt!!!

Answer 3

\(A=2016\cdot2018=\left(2017-1\right)\left(2017+1\right)\)

\(=2017^2-1< 2017^2\)

\(\Rightarrow A< B\)

Vậy \(A< B\) hay \(2016\cdot2018< 2017^2\)