1、(2+1)(2^2+1)(2^4+1)(2^8+1)-2^16 2、a^3c-4a^2bc+4ab^2c
问题描述:
1、(2+1)(2^2+1)(2^4+1)(2^8+1)-2^16 2、a^3c-4a^2bc+4ab^2c
答
1)、(2+1)(2^2+1)(2^4+1)(2^8+1)-2^16
=(2-1)(2+1)2^2+1)(2^4+1)(2^8+1)-2^16
=2^16-1-2^16
=-1
2)a^3c-4a^2bc+4ab^2c
=AC(A^2-4AB+4B^2)=AC(A-2B)^2