下列从左到右的变形属于因式分解正确的是?A.(x+y)(x-y)=x²-1B.x²--y²+3=(x+y)(x+y)(x-y)+3C.a²-4=(a-2)²D.x²y-xy+x³y = xy(x-1+x²)错在什么地方,我想有点麻烦,所以
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/26 23:14:46
![下列从左到右的变形属于因式分解正确的是?A.(x+y)(x-y)=x²-1B.x²--y²+3=(x+y)(x+y)(x-y)+3C.a²-4=(a-2)²D.x²y-xy+x³y = xy(x-1+x²)错在什么地方,我想有点麻烦,所以](/uploads/image/z/6918765-69-5.jpg?t=%E4%B8%8B%E5%88%97%E4%BB%8E%E5%B7%A6%E5%88%B0%E5%8F%B3%E7%9A%84%E5%8F%98%E5%BD%A2%E5%B1%9E%E4%BA%8E%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E6%AD%A3%E7%A1%AE%E7%9A%84%E6%98%AF%3FA.%EF%BC%88x%2By%EF%BC%89%EF%BC%88x-y%EF%BC%89%3Dx%26%23178%3B-1B.x%26%23178%3B--y%26%23178%3B%2B3%3D%EF%BC%88x%2By%EF%BC%89%EF%BC%88x%2By%EF%BC%89%EF%BC%88x-y%EF%BC%89%2B3C.a%26%23178%3B-4%3D%28a-2%29%26%23178%3BD.x%26%23178%3By-xy%2Bx%26%23179%3By+%3D+xy%EF%BC%88x-1%2Bx%26%23178%3B%EF%BC%89%E9%94%99%E5%9C%A8%E4%BB%80%E4%B9%88%E5%9C%B0%E6%96%B9%2C%E6%88%91%E6%83%B3%E6%9C%89%E7%82%B9%E9%BA%BB%E7%83%A6%2C%E6%89%80%E4%BB%A5)
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