8m2n |
2mn2 |
5ab |
20a2b |
2(x-y)3 |
y-x |
8m2n |
2mn2 |
4m |
n |
5ab |
20a2b |
1 |
4a |
2(x-y)3 |
y-x |
6m2n |
3mn2 |
8x2yz3 |
-32xyz5 |
8(y-x)5 |
x-y |
x2-4 |
x2+5x-14 |
a |
2xy |
b |
3x2 |
1 |
2a3b2 |
2 |
3a2b2c |
1 |
y-1 |
1 |
y+1 |
x |
6ab2 |
y |
9a2bc |
a-1 |
a2+2a+1 |
6 |
a2-1 |
1 |
2ab3 |
2 |
5a2b2c |
a |
2xy |
b |
3x2 |
3c |
2ab2 |
a |
8bc2 |
1 |
y-1 |
1 |
y+1 |
3(x-2)2(4-x2) |
(x+2)2(x-2)3 |
A.1个 | B.2个 | C.3个 | D.无数个 |
© 2017-2019 超级试练试题库,All Rights Reserved.