因式分解(1)ax 3 y+axy 3 -2ax 2 y 2 (2)x 2 (x-y)+(y-x
因式分解(1)ax3y+axy3-2ax2y2(2)x2(x-y)+(y-x)...
因式分解(1)ax 3 y+axy 3 -2ax 2 y 2 (2)x 2 (x-y)+(y-x)
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浮生如梦1078
推荐于2016-05-01
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(1)ax 3 y+axy 3 -2ax 2 y 2 =axy(x 2 +y 2 -2xy)=axy(x-y) 2 . (2)x 2 (x-y)+(y-x)=(x-y)(x 2 -1)=(x-y)(x+1)(x-1). |
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