作业帮帮忙做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!
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 22:37:16
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