x |
x+2 |
x2+x+1 |
x+2 |
x2-1 |
x-1 |
x |
x+2 |
x2+x+1 |
x+2 |
x-1 |
(x-1)(x+1) |
x |
x+2 |
x2+x+1 |
x+2 |
1 |
x+1 |
x(x+1) |
(x+2)(x+1) |
x2+x+1 |
x+2 |
1 |
x+1 |
x(x+1) |
(x+2)(x+1) |
x2+x+1 |
(x+2)(x+1) |
x2+x-x2-x-1 |
(x+2)(x+1) |
-1 |
(x+2)(x+1) |
1 |
x2+3x+2 |
1 |
9+9+2 |
1 |
20 |
x-2 |
x+2 |
4x |
x2-4 |
1 |
x2-4 |
3 |
3 |
3 |
4m+8 |
m2-4 |
m2+4 |
m-2 |
x-3 |
x+3 |
2x |
x2-9 |
a-1 |
a2-4a+4 |
a2-4 |
2a-2 |
8 |
x+1 |
x+3 |
x+1 |
3 |
2 |
4x |
x-3 |
x |
x+3 |
3x |
x2-9 |
© 2017-2019 超级试练试题库,All Rights Reserved.