帮忙做2道因式分解题,急用!悬赏100分,做好的追加100分~2x^3(x-y)+8x(y-x)6xy-x^2y^2-9一定要认真算啊,XX!
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![帮忙做2道因式分解题,急用!悬赏100分,做好的追加100分~2x^3(x-y)+8x(y-x)6xy-x^2y^2-9一定要认真算啊,XX!](/uploads/image/z/7301841-33-1.jpg?t=%E5%B8%AE%E5%BF%99%E5%81%9A2%E9%81%93%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E9%A2%98%2C%E6%80%A5%E7%94%A8%21%E6%82%AC%E8%B5%8F100%E5%88%86%2C%E5%81%9A%E5%A5%BD%E7%9A%84%E8%BF%BD%E5%8A%A0100%E5%88%86%7E2x%5E3%28x-y%29%2B8x%28y-x%296xy-x%5E2y%5E2-9%E4%B8%80%E5%AE%9A%E8%A6%81%E8%AE%A4%E7%9C%9F%E7%AE%97%E5%95%8A%2CXX%21)
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帮忙做2道因式分解题,急用!悬赏100分,做好的追加100分~2x^3(x-y)+8x(y-x)6xy-x^2y^2-9一定要认真算啊,XX!
帮忙做2道因式分解题,急用!悬赏100分,做好的追加100分~
2x^3(x-y)+8x(y-x)
6xy-x^2y^2-9
一定要认真算啊,XX!
帮忙做2道因式分解题,急用!悬赏100分,做好的追加100分~2x^3(x-y)+8x(y-x)6xy-x^2y^2-9一定要认真算啊,XX!
2x^3(x-y)+8x(y-x)
=2x^3(x-y)-8x(x-y)
=2x(x-y)(x^2-4)
=2x(x-y)(x+2)(x-2)
6xy-x^2y^2-9
=-[(xy)^2-6xy+9]
=-(xy-3)^2
原式=2(x-y)(x^3-4x)=2x(x-y)(x^2-4)=2x(x-y)(x-2)(x+2)
原式=-【(xy)^2-6xy+9】=-(xy-3)^2
2x^3(x-y)+8x(y-x)
=2x^3(x-y)-8x(x-y)
=2x(x-y)(x^2-4)
=2x(x-y)(x+2)(x-2)
6xy-x^2y^2-9
=-[(xy)^2-6xy+9]
=-(xy-3)^2
不知道对不对
2x^3(x-y)+8x(y-x)
=2x^3(x-y)-8x(x-y)
=2x(x-y)(x^2-4)
=2x(x-y)(x+2)(x-2)
6xy-x^2y^2-9
=-(x^2y^2-6xy+9)
=(xy-3)^2