1 |
1+a2 |
1 |
1+b2 |
ab |
ab+a2 |
ab |
ab+b2 |
ab |
a(b+a) |
ab |
b(a+b) |
4 |
x+2 |
3 |
2-x |
2 |
x2-4 |
x-1+y-1 |
1-x-1y-1 |
1 |
x+1 |
x+3 |
x2-1 |
x2-2x+1 |
x2+4x+3 |
1 |
2 |
2 |
3 |
9 |
7 |
1 |
5 |
2m |
3n |
3n |
p |
m2n |
p2 |
2a |
a2-9 |
1 |
a-3 |
1 |
a |
1 |
b |
a2-b2 |
ab |
8 |
x+1 |
x+3 |
x+1 |
2 |
(-5)2 |
2 | ||
|
-20 |
0.2 |
| ||
3 |
© 2017-2019 超级试练试题库,All Rights Reserved.