Question

小明3(4+1)(4^2-1)时,把3写成4-1后,得3(4+1)(4^2+1)=(4-1)(4+

Answer 1

(2+1)(2^2+1)(2^4+1)(2^8+1)...（2^1024+1)-2^2048

此题关键是把2+1=3写为2^2-1