今天七点之前一定要写完,

笑看yy1232022-10-04 11:39:541条回答

今天七点之前一定要写完,

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飘扬6 共回答了7个问题 | 采纳率100%
(1)=4a+3a的平方-3+3a的立方+a-4a的立方
=(4+1)a+3a的平方-3+(3-4)a的立方
=-a的立方+3a的平方+5a-3
(2)=3x的平方-7x+4x-3+2x的平方
=(3+2)x的平方+(-7+4)x-3
=5x的平方-3x-3
(3)=5a的平方b-15ab的平方-2a的平方b+14ab的平方
=(5-2)a的平方b+(-15+14)ab的平方
=3a的平方b-ab的平方
1年前

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读郑敏的《春天》有感……拜托啦!在明天十点之前给我的我给五分,今天七点之前的给十分.五百字啊
读郑敏的《春天》有感……拜托啦!在明天十点之前给我的我给五分,今天七点之前的给十分.五百字啊
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这首诗写于40年代,
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大家帮我翻译一篇文章啊!英语译成汉语!要准确的,一定要快!因为今天七点之前就用了,谢谢了!有奖励.
大家帮我翻译一篇文章啊!英语译成汉语!要准确的,一定要快!因为今天七点之前就用了,谢谢了!有奖励.
I was still at the office at that time ,but I had got everything ready for his arrival .After letting him know where my house was,I told him that I had left the key under the door -mat .As I was likely to be home rather late ,I told him to go into the kitchen and help himself to food and drink . Two hours later my friend telephoned me from the house .At the moment ,he said ,he was listening to some of my records after having just had a truly wonderful meal .He had found a cooker and fried two eggs and had helped himself to some cold chicken from the ice box ,Now, he said ,he was drinking a glass of orange juice and he hoped I would join him .When I asked him if he had reached the house without difficulty , he answered ,"I was not able to find the key ,but luckily the living -room windows just by the apple tree were left open and you know what I could do."I listened yo all this in surprise .In front of my living -room there was no apple tree at all.
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那时候,我还在办公室,但是我已经为他的到来做好了准备.告诉他我家在哪之后,我告诉他我把钥匙放在了门垫下.晚上我可能回家比较晚,所以我让他去厨房自己弄些吃的喝的.两个小时后,我的朋友从家里打了个电话给我.当时,他说他吃完丰盛的晚餐后正在听一些我的唱片.他之前找到了一个厨具,煎了两个鸡蛋,又从冰箱里弄了一些冷鸡吃.现在,他说,他正在喝一杯橘汁,而且希望我也能和他一起喝.我问他找到我家有没有花费一些功夫,他回答说:“我并没找到钥匙,但是很幸运的是,起居室的窗户正好在苹果树的旁边,而且没有关上.你知道,这种情况下,我会怎么做了.”我听了这些非常惊讶,因为,我的起居室旁边并没有苹果树.