[(x+2y)(x-2y)+4(x-y)2]÷6x等于多少?

[(x+2y)(x-2y)+4(x-y)2]÷6x等于多少?
[(x+2y)(x-2y)+4(x-y)2]÷6x等于多少?

[(x+2y)(x-2y)+4(x-y)2]÷6x等于多少?
[(x+2y)(x-2y)+4(x-y)²]÷6x
=[(x-y)²+4(x-y)²]÷6x
=6(x-y)²÷6x
=(x-y)²/x

[x2-4y2+4(x2-2xy+y2)]%6x
[5x2-8xy]%6x
=[5x-8y]/6
应该是这个样子了

[(x+2y)(x-2y)+4(x-y)2]÷6x
=[x^2-4y^2+4x^2+4y^2-8xy]÷6x
=[5x^2-8xy]÷6x
=5x/6-4y/3