(1) 2−2+3√8−2sin60°+|−√3|
(2)化简: (1−1x+1)÷xx2−1
解方程: (1)3-2=4+5 (2)=3-
(-48)÷8-(-25)×(-4)+6
计算:(1) .(2).
计算:(1) (2).