5 |
a-2 |
a-3 |
2a-4 |
5 |
a-2 |
a2-4 |
a-2 |
2(a-2) |
a-3 |
9-a2 |
a-2 |
2(a-2) |
a-3 |
(a-3)(a+3) |
a-2 |
2(a-2) |
a-3 |
x |
x-y |
y2 |
x+y |
x4y |
x4-y4 |
x2 |
x2+y2 |
2 |
a+1 |
a-1 |
a2-4 |
(a+1)2 |
1 |
a2-1 |
3 |
x+2 |
x |
x-1 |
x2+4x+4 |
x2-4 |
x+2 |
x-2 |
1 |
x |
x2-6x+9 |
x-3 |
x+3 |
x2+6x+9 |
© 2017-2019 超级试练试题库,All Rights Reserved.