若a=2000x+2001,b=2000x+2002,c=2000x+2003.求a^2+b^2+c^-ab-ac-bc.
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/16 03:14:51
若a=2000x+2001,b=2000x+2002,c=2000x+2003.求a^2+b^2+c^-ab-ac-bc.若a=2000x+2001,b=2000x+2002,c=2000x+2003
若a=2000x+2001,b=2000x+2002,c=2000x+2003.求a^2+b^2+c^-ab-ac-bc.
若a=2000x+2001,b=2000x+2002,c=2000x+2003.求a^2+b^2+c^-ab-ac-bc.
若a=2000x+2001,b=2000x+2002,c=2000x+2003.求a^2+b^2+c^-ab-ac-bc.
a^2+b^2+c^-ab-ac-bc.
=1/2[(a-b)^2+(b-c)^2+(a-c)^2]
=1/2[1+1+4]
=3