计算:(2x方+xy-4x-2y)÷(2-x)计算:(2x方+xy-4x-2y)÷(2-x)

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计算:(2x方+xy-4x-2y)÷(2-x)计算:(2x方+xy-4x-2y)÷(2-x)计算:(2x方+xy-4x-2y)÷(2-x)计算:(2x方+xy-4x-2y)÷(2-x)计算:(2x方+

计算:(2x方+xy-4x-2y)÷(2-x)计算:(2x方+xy-4x-2y)÷(2-x)
计算:(2x方+xy-4x-2y)÷(2-x)
计算:(2x方+xy-4x-2y)÷(2-x)

计算:(2x方+xy-4x-2y)÷(2-x)计算:(2x方+xy-4x-2y)÷(2-x)
(2x^2+xy-4x-2y)÷(2-x)
=[ (2x^2-4x) + (xy-2y) ]÷(2-x)
=[ 2x(x-2)+ y(x-2)]÷(2-x)
=(x-2)(2x+y) ÷(2-x)
= - (2x+y)
=-2x-y

原式=(2x²+xy-4x-2y)÷(2-x)
=[(2x²-4x)+(xy-2y)]÷[-(x-2)]
=[2x(x-2)+y(x-2)]÷[-(x-2)]
=(2x+y)(x-2)÷[-(x-2)]
=(2x+y)÷(-1)
=-2x-y
希望能帮到你,望采纳

(2x方+xy-4x-2y)÷(2-x)
=(2x方-4x)÷(2-x)+(xy-2y)÷(2-x)
=-2x(2-x)÷(2-x)-y(2-x)÷(2-x)
=-2x-y