已知实数a、b、c满足(a-b)开三次方+(b-c)开三次方=2,a-c=26,则a-2b+c=_____

问题描述:

已知实数a、b、c满足(a-b)开三次方+(b-c)开三次方=2,a-c=26,则a-2b+c=_____

a-b=27,b-c=-1,a-2b+c=28