化简求值:(x+y)(x-y)+(x-y)²-(6x²y-2xy²)÷2y,其中x=-2,
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化简求值:(x+y)(x-y)+(x-y)²-(6x²y-2xy²)÷2y,其中x=-2,y=1/3
(x+y)(x-y)+(x-y)²-(6x²y-2xy²)÷2y,其中x=-2,y=1/3
(x+y)(x-y)+(x-y)²-(6x²y-2xy²)÷2y,其中x=-2,y=1/3
![化简求值:(x+y)(x-y)+(x-y)²-(6x²y-2xy²)÷2y,其中x=-2,](/uploads/image/z/2777353-25-3.jpg?t=%E5%8C%96%E7%AE%80%E6%B1%82%E5%80%BC%EF%BC%9A%28x%2By%29%28x-y%29%2B%28x-y%29%26%23178%3B-%286x%26%23178%3By-2xy%26%23178%3B%29%C3%B72y%2C%E5%85%B6%E4%B8%ADx%3D-2%2C)
(x+y)(x-y)+(x-y)²-(6x²y-2xy²)÷2y
=(x+y)(x-y)+(x-y)²-2xy(3x-y)÷2y
=(x+y)(x-y)+(x-y)²-x(3x-y)
=x^2-y^2+x^2-2xy+y^2-3x^2+xy
=-x^2-xy
=-x(x+y)
=-(-2)(-2+1/3)
= -10/3
=(x+y)(x-y)+(x-y)²-2xy(3x-y)÷2y
=(x+y)(x-y)+(x-y)²-x(3x-y)
=x^2-y^2+x^2-2xy+y^2-3x^2+xy
=-x^2-xy
=-x(x+y)
=-(-2)(-2+1/3)
= -10/3
化简求值:(x+y)(x-y)+(x-y)²-(6x²y-2xy²)÷2y,其中x=-2,
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