化简方程式 4(x-y)-(x-y)²-4=0
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 12:54:32
![化简方程式 4(x-y)-(x-y)²-4=0](/uploads/image/z/2548746-18-6.jpg?t=%E5%8C%96%E7%AE%80%E6%96%B9%E7%A8%8B%E5%BC%8F+4%28x-y%29-%28x-y%29%26%23178%3B-4%3D0)
化简方程式 4(x-y)-(x-y)²-4=0
化简方程式 4(x-y)-(x-y)²-4=0
化简方程式 4(x-y)-(x-y)²-4=0
4(x-y)-(x-y)²-4=0两边同时乘以-1
(x-y)²-4(x-y)+4=0
(x-y-2)²=0
4(x-y)-(x-y)²-4=-((x-y)²+4-4(x-y))=-(x-y-2)²=0
所以,x-y-2=0
4(x-y)-(x-y)²-4=0
(x-y-2)²=0
x-y-2=0