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这道因式分解用了什么方法谢谢来答 留恋小学母校500字要具体事例 若x-y=4,求(xx+yy)÷2-xy的值 x-y=3,(x+y)(x+y)=25,求xy/xx+yy的值? 雅思词汇和托福词汇差别大么? 一台复读机原价300元,先提价10%,再降价10%,现在售价多少元? 一种复读机现在的计价比原来降价15%,原价210元,现价多少元 1.Li Ming's birthday is _ April 11.2.When were y1.Li Ming's birthday is _ April 11.2.When were you born?—I was born__.3.__is Sam's birthday?4.September is the _month of a year.5.The boy is only_.Today is his _birthday.6._is the fourth month of a ye When is Li Siguang's birthday?I am very busy! .Li Ming’s birthday is ___ April 11. he is going to zoo.还是he is going zoo?请说明原因可是be going to 碰到shopping不是可以省略to的吗？ I'm going to the zoo this morming. ().i'mgoing on foot. 根据答句,写问句!He is going there on foot. 空集是任何非空子集的真子集这句话什么意思? 一种书售价60元,连续两次降价10%后,现在售价是（）元 非空子集和非空真子集的区别? 什么叫作非空真子集,非空子集. I'm going to the post office是什么意思 女孩子说你说话酸是什么意思?我现在有点困惑,不知道是什么意思,我喜欢的女孩子说我说话酸,这是什么意思啊,是说你不好的吗? I'm going to the post office___you're there ,can you get me some stamps?aswhile becauseif 英语18.-I’m going to the post office.18.-I’m going to the post office.-_______ you’re there,can you get me some stamps?a.As b.While c.Because d.If为什么 I’m going to the post office.While you are there,please buy me some stamps. harry and i are going tu eat steak怎样变成问句 一种洗衣机,现价980元,比原价降低了2%,原价多少元? What are you going to do?给问句选答语 冰箱原价2400元,现价1800元,洗衣机的价格降低了百分之几?要给算式. 1.某品牌洗衣机现在每台售价是2400元,比原来便宜260元,现售价比原价降低了百分之几?急. 正确答案是D 求讲解1.下列关于地球上各气压带,风带的叙述正确的是 ( )A.高气压带均盛行上升气流B.高气压带均由空气遇冷收缩下沉形成C.中纬地带气流沿途不断增温,不利于成云致雨D.中纬西 成语接龙,开头是"声"结尾是"我"可以同音不同字. 英国资产阶级革命时,世界发展的主流是什么 某农机厂计划生产收割机5000台,实际生产了5500台.实际比原计划多生产了百分之几? 汽车厂上个月生产高级轿车5000辆,比计划的1.2倍还多80辆.上个月计划生产轿车多少辆?