The fat man was very heavy and soon the chair was in ____ (piece).
设等差数列{an}的前n项和为Sn,若S8=32,则a2+2a5+a6=____
下列表述有误的一项是( )
已知:实数a,b在数轴上的位置如图所示,化简:a+12+2b-12﹣|a﹣b|.