1 |
x-3 |
6 |
x2-9 |
x2-2xy+y2 |
y |
x2-y2 |
x2y |
1 |
x-3 |
6 |
(x+3)(x-3) |
1 |
x+3 |
y |
(x-y)2 |
(x+y)(x-y) |
x2y |
x+y |
x |
x2-1 |
x-1 |
4xy |
x-y |
4xy |
x+y |
2 |
3 |
3 |
1 |
2 |
x2+2xy+y2 |
5x2-4xy |
x+y |
5x-4y |
x2-y |
x |
a+1 |
a-1 |
1 |
a2-2a+1 |
a |
a-1 |
b |
a |
a |
c |
x |
x2-1 |
x2+x |
x |
3a |
b |
b2 |
3a2 |
© 2017-2019 超级试练试题库,All Rights Reserved.