x+2 |
x2-2x |
x-1 |
x2-4x+4 |
4-x |
x |
x+2 |
x(x-2) |
x-1 |
(x-2)2 |
x |
4-x |
(x+2)(x-2)-x(x-1) |
x(x-2)2 |
x |
4-x |
x2-4-x2+x |
(x-2)2(4-x) |
1 |
(x-2)2 |
1 |
(1-2)2 |
2a |
a2-9 |
1 |
a-3 |
1 |
a |
1 |
b |
a2-b2 |
ab |
xy2-x3 |
y |
x |
yz |
y |
zx |
z |
xy |
x |
x2-1+1 |
1 |
3 |
x2 |
x2+x+1 |
x+2 |
x2-2x |
x-1 |
x2-4x+4 |
x-4 |
x |
x+1 |
x-1 |
4 |
x2-1 |
© 2017-2019 超级试练试题库,All Rights Reserved.