数学(-4y²+10yx-4x²)÷(2x-y)

问题描述:

数学(-4y²+10yx-4x²)÷(2x-y)

(-4y²+10yx-4x²)÷(2x-y)
=-2(2x²-5xy+2y²)÷(2x-y)
=-2(2x-y)(x-2y)÷(2x-y)
=-2(x-2y)
=-2x+4y