Question

[dũng nguyễn đăng]

Bài 4: So sánh hai số M và N biết :
M = 2^2016 và N = (2 + 1)(2^2 + 1) (2^4 + 1) …(2^1008 + 1)

Answer 1

[Lấp La Lấp Lánh]

\(N=\left(2+1\right)\left(2^2+1\right)\left(2^4+1\right)...\left(2^{1008}+1\right)=\left(2-1\right)\left(2+1\right)\left(2^2+1\right)\left(2^4+1\right)...\left(2^{1008}+1\right)=\left(2^2-1\right)\left(2^2+1\right)\left(2^4+1\right)...\left(2^{1008}+1\right)=2^{2016}-1< 2^{2016}=M\)