Question

Nếu \(\left(2+1\right)\left(2^2+1\right)\left(2^4+1\right)...\left(2^m+1\right)+1=2^{3m-218}\) thì m bằng ...

Answer 1

<=> (2⁴-1)(2⁴+1).....(2^m+1)=2^3m-218

^<=> 2^2m-1+1=2^3m-218

^<=> 2^2m=2^3m-218

<=>2m=3m-218

=>m=218

Answer 2

<=> (24-1)(24+1).....(2m+1)+1=23m-218

<=> 22m-1+1=23m-218

<=> 22m=23m-218

<=>2m=3m-218

=>m=218

ở dưới mình nhầm nha!!!