点(m,n)在一次函数y=2x-8的图像上 则2m-8=n
2m-n=8
[(m²+n²)-(m-n)²]÷4n+1/4(m-n)
=[m²+n²-(m²-2mn+n²)]/4n+1/4*(m-n)
=1/2m+1/4m-1/4n=(3m-n)/4
是不是题 目有误
点(m,n)在一次函数y=2x-8的图像上 则2m-8=n
2m-n=8
[(m²+n²)-(m-n)²]÷4n+1/4(m-n)
=[m²+n²-(m²-2mn+n²)]/4n+1/4*(m-n)
=1/2m+1/4m-1/4n=(3m-n)/4
是不是题 目有误