作业帮[y(x-y)+x(x+y)-x²]÷(-y)要过程
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/19 23:45:32
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[y(x-y)+x(x+y)-x²]÷(-y)要过程
[y(x-y)+x(x+y)-x²]÷(-y)要过程
[y(x-y)+x(x+y)-x²]÷(-y)要过程
[y(x-y)+x(x+y)-x²]÷(-y)
=(xy-y^2+x^2+xy-x^2)÷(-y)
=(2xy-y^2)÷(-y)
=-2x+y
[y(x-y)+x(x+y)-x²]÷(-y)
=(xy-y^2+x^2+xy-x^2)÷(-y)
=(2xy-y^2)÷(-y)
=-2x+y
=[xy-yy+xx+xy-xx]/(-y)
=(2xy-yy)/(-y)
=-2x+y