题目内容
(-4.3)×(-)3+(-5.021)÷(-)3-25.321×()3
-54
计算:(ab3)2·(-)-4
计算
[(x-2y)(x+2y)+4(x-y)2]÷5x.
||-|4.2|+|-|
-(-3)3×23
用计算器计算:
(-11)3×(-23)2×322(精确到亿)
(-)2÷(-)×(-2)2÷(-6)
()5÷()-4÷(-)-3
(-y4n-1÷y2n+1-y3n+2÷yn-1)÷(-yn-1)