1、(2+1)(2^2+1)(2^4+1)(2^8+1)-2^16 2、a^3c-4a^2bc+4ab^2c

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1、(2+1)(2^2+1)(2^4+1)(2^8+1)-2^162、a^3c-4a^2bc+4ab^2c1、(2+1)(2^2+1)(2^4+1)(2^8+1)-2^162、a^3c-4a^2bc+

1、(2+1)(2^2+1)(2^4+1)(2^8+1)-2^16 2、a^3c-4a^2bc+4ab^2c
1、(2+1)(2^2+1)(2^4+1)(2^8+1)-2^16 2、a^3c-4a^2bc+4ab^2c

1、(2+1)(2^2+1)(2^4+1)(2^8+1)-2^16 2、a^3c-4a^2bc+4ab^2c
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