解方程:2-3x-2=0
计算: (1) (2).
计算: (1)-(-2)2+ (2)|
计算:
计算题: (1)24+(-14)+(-16)+8 (2) (3) (4)
计算 (1)-9+12-3+8 (2)(-1)+(-)+(+)-(+) (3)(-3)÷2÷(-3)×(-0.75) (4)-16-(1-0.5)××[2-(-3)2]