{(x+2y)(x-2y)+[2(x-y)]²}÷6x=?
问题描述:
{(x+2y)(x-2y)+[2(x-y)]²}÷6x=?
答
原式=(x²-4y²+4x²-8xy+4y²)÷6x
=(5x²-8xy)÷6x
=(5x-8y)/6