化简: 4xy²-3x²y-{3x²y+xy²-[2xy²-(4x²y+y²x)]}急 马上要~谢谢~追加10分~
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 16:39:33
![化简: 4xy²-3x²y-{3x²y+xy²-[2xy²-(4x²y+y²x)]}急 马上要~谢谢~追加10分~](/uploads/image/z/401935-31-5.jpg?t=%E5%8C%96%E7%AE%80%EF%BC%9A+4xy%26%23178%3B-3x%26%23178%3By-%EF%BD%9B3x%26%23178%3By%2Bxy%26%23178%3B-%5B2xy%26%23178%3B-%EF%BC%884x%26%23178%3By%2By%26%23178%3Bx%EF%BC%89%5D%EF%BD%9D%E6%80%A5+%E9%A9%AC%E4%B8%8A%E8%A6%81%7E%E8%B0%A2%E8%B0%A2%7E%E8%BF%BD%E5%8A%A010%E5%88%86%7E)
化简: 4xy²-3x²y-{3x²y+xy²-[2xy²-(4x²y+y²x)]}急 马上要~谢谢~追加10分~
化简: 4xy²-3x²y-{3x²y+xy²-[2xy²-(4x²y+y²x)]}
急 马上要~谢谢~追加10分~
化简: 4xy²-3x²y-{3x²y+xy²-[2xy²-(4x²y+y²x)]}急 马上要~谢谢~追加10分~
4xy²-3x²y-{3x²y+xy²-[2xy²-(4x²y+y²x)]}
=4xy^2-3x^2y-3x^2y-xy^2+2xy^2-4x^2y-y^2x
=4xy^2-10x^2y
您好!
去掉括号,得到
4xy²-3x²y-3x²y-xy²+2xy²-4x²y-y²x
=4xy²-xy²+2xy²-xy²-3x²y-3x²y-4x²y
=4xy²-10x²y