(1)计算:|1﹣|++(﹣2)0;(2)化简:(a2b﹣2ab2﹣b3)÷b﹣(a﹣b)2.
计算下列各题: (1)23-17-(-7)+(-16) (2) = = (3) = (4)-1× =
计算:
.计算: