x+2 |
x+1 |
x-1 |
x+1 |
| ||
x-3 |
9 |
x-3 |
x+2 |
x+1 |
x-1 |
x+1 |
x+2-x+1 |
x+1 |
3 |
x+1 |
| ||
x-3 |
9 |
x-3 |
(x+3)(x-3) |
x-3 |
3 |
x+1 |
a |
a-b |
b |
b-a |
1 | ||
|
| ||
|
2 |
1-m |
1 |
m-1 |
2m+1 |
m-n |
m+n |
m-n |
1 |
m-n |
a-2 |
a2-4 |
2 |
2-a |
a-3 |
(a+2)(a-2) |
2 |
a-2 |
a-3 |
(a+2)(a-2) |
2(a+2) |
(a+2)(a-2) |
3+x |
x |
3+y |
y |
1 |
m+1 |
m+3 |
1-m2 |
2y-3z |
2yz |
2z-3x |
3zx |
9x-4y |
6xy |
A.零 | B.零次多项式 |
C.一次多项式 | D.不为零的分式 |
a+b |
a |
a-b |
a |
a+b-a-b |
a |
x |
(x-1)2 |
1 |
(1-x)2 |
x |
(x-1)2 |
1 |
(x-1)2 |
x-1 |
(x-1)2 |
1 |
x-1 |
1 |
xy2 |
1 |
2y2 |
1 |
2(x2+y2) |
c |
a+b |
c |
a-b |
2c |
a2+b2 |
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