a |
ab-b2 |
b |
a2-ab |
a2+b2 |
2ab |
3 |
3 |
a |
b(a-b) |
b |
a(a-b) |
2ab+a2+b2 |
2ab |
a2-b2 |
ab(a-b) |
2ab |
(a+b)2 |
(a+b)(a-b) |
ab(a-b) |
2ab |
(a+b)2 |
2 |
a+b |
3 |
3 |
2 |
-2 |
x |
x+y |
y |
x-y |
2xy |
x2-y2 |
3 |
3 |
1 |
2a |
1 |
a-b |
a-b |
2a |
2 |
2 |
a2-1 |
a2-2a+1 |
2a-a2 |
a-2 |
2 |
4-x |
x-2 |
12 |
x-2 |
3 |
x2-y2 |
x2-y2 |
x-y |
x+y |
2xy |
(x-y)2(x+y) |
© 2017-2019 超级试练试题库,All Rights Reserved.