一个多项式加上x²y-3xy²得2x²y-XY²,则这个多项式是
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 01:17:32
![一个多项式加上x²y-3xy²得2x²y-XY²,则这个多项式是](/uploads/image/z/2532730-58-0.jpg?t=%E4%B8%80%E4%B8%AA%E5%A4%9A%E9%A1%B9%E5%BC%8F%E5%8A%A0%E4%B8%8Ax%26%23178%3By-3xy%26%23178%3B%E5%BE%972x%26%23178%3By-XY%26%23178%3B%2C%E5%88%99%E8%BF%99%E4%B8%AA%E5%A4%9A%E9%A1%B9%E5%BC%8F%E6%98%AF)
一个多项式加上x²y-3xy²得2x²y-XY²,则这个多项式是
一个多项式加上x²y-3xy²得2x²y-XY²,则这个多项式是
一个多项式加上x²y-3xy²得2x²y-XY²,则这个多项式是
考点:整式的加减.
分析:列代数式(2x2y-xy2)-(x2y-3xy2),然后去括号、合并同类项即可化简.
(2x2y-xy2)-(x2y-3xy2)
=2x2y-xy2-x2y+3xy2
=x2y+2xy2.