Question

chứng minh rằng (2006 x n + 2) x (2008 x n +1) chia hết cho 2

Answer 1

\(\left(2006n+2\right)\left(2008n+1\right)\)

\(=2\left(1003n+1\right)\left(2008n+1\right)\)\(⋮\)\(2\)(đpcm)

p/s: chúc bạn học tốt