3x平方-[5x-(2分之1x-3)+2x立方]
=3x²-5x+1/2x-3-2x³
=-2x³+3x-9/2x-3
猜你喜欢
- 1they made _______ much noise that our teacher got very angry
- 2most people () live in less developed countries are quite poor.A.where B.who C.whom
- 31.The cars travel too slowly to be dangerous to children on some suburban roads.
- 4找出下列句子中唯一的错误,并改正.He usually do homework in the evening
- 5用11个边长是8分米的正方形拼成一个长方形,拼成的长方形的周长是多少分米?,面积是多少?
- 6steal的过去式是?``````
- 7一个体积为100m³的铁球 当它完全浸没在水中是受到多大浮力?
- 8一项工程,甲单独做15天完成,乙10天完成,两人合作若干天后,甲休息了几天,结果共用8天完成,求甲休息了几天?
- 9Beat 1 friend.1 left求翻译
- 10有一个只含有字母x的多项式,它的次数是2,且二次项、一次项的系数都是-1,常数项是2,试写出这个多项式.