xy(x-y)²-x(y-x)²+xm(x-y)²,其中x=4,y=1,m=-1
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![xy(x-y)²-x(y-x)²+xm(x-y)²,其中x=4,y=1,m=-1](/uploads/image/z/4517743-31-3.jpg?t=xy%28x-y%29%26%23178%3B-x%28y-x%29%26%23178%3B%2Bxm%28x-y%29%26%23178%3B%2C%E5%85%B6%E4%B8%ADx%3D4%2Cy%3D1%2Cm%3D-1)
xy(x-y)²-x(y-x)²+xm(x-y)²,其中x=4,y=1,m=-1
xy(x-y)²-x(y-x)²+xm(x-y)²,其中x=4,y=1,m=-1
xy(x-y)²-x(y-x)²+xm(x-y)²,其中x=4,y=1,m=-1
xy(x-y)²-x(y-x)²+xm(x-y)²
=xy(x-y)²-x(x-y)²+xm(x-y)²
=x(y-1+m)(x-y)²
=4(1-1-1)(4-1)²
=-4x1x9
=-36
原式=xy(x-y)²-xm(x-y)²-x(y-x)²
=-x(y-x)²
当x=4,y=1,m=-1时,
原式=-4*(1-4)²
=-36
xy(x-y)²-x(y-x)²+xm(x-y)²
=xy(x-y)²-x(x-y)²+xm(x-y)²
=x(x-y)²(y-x+m)
当x=4,y=1,m=-1时
原式=4(4-1)²(1-1-1)
=4×9×(-1)
=-36