(本题共2道小题,每小题5分,共10分)(1)分解因式: (2)化简:(x+3y)2+(2x+y)(x-y).
(11·十堰)计算:-2-1+︱-1︱.
(11·丹东)(本题8分)计算:
计算:(1) (2)
(8分)计算: