作业帮如果2X-Y=10,求代数式[(X²+Y²)-(X-Y)²+2Y(X-Y)]÷4Y
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/29 16:52:30
![如果2X-Y=10,求代数式[(X²+Y²)-(X-Y)²+2Y(X-Y)]÷4Y](/uploads/image/z/958602-66-2.jpg?t=%E5%A6%82%E6%9E%9C2X-Y%3D10%2C%E6%B1%82%E4%BB%A3%E6%95%B0%E5%BC%8F%5B%28X%26%23178%3B%2BY%26%23178%3B%29-%28X-Y%29%26%23178%3B%2B2Y%28X-Y%29%5D%C3%B74Y)
如果2X-Y=10,求代数式[(X²+Y²)-(X-Y)²+2Y(X-Y)]÷4Y
如果2X-Y=10,求代数式[(X²+Y²)-(X-Y)²+2Y(X-Y)]÷4Y
如果2X-Y=10,求代数式[(X²+Y²)-(X-Y)²+2Y(X-Y)]÷4Y
[(X²+Y²)-(X-Y)²+2Y(X-Y)]÷4Y
=（x^2+y^2-x^2+2xy-y^2+2xy-2y^2)/4y
=(4xy-2y^2)/4y
=x-1/2y
如果2X-Y=10,
x-1/2y=10/2=5