计算: 16 - 2 sin 45 ° + ( 1 3 ) - 1 - | 2 - 2 | .
计算 (1) (2)(a+1)2﹣a(a﹣1)
计算:
(11·十堰)计算:-2-1+︱-1︱.
(11·丹东)(本题8分)计算: