x2+3x-6 |
x+2 |
x2-4 |
x2+4x+4 |
5 |
x2+3x-6 |
x+2 |
x+2 |
x+2 |
(x+2)(x-2) |
(x+2)2 |
x2+2x-8 |
x+2 |
x+2 |
x-2 |
(x-2)(x+4) |
x+2 |
x+2 |
x-2 |
5 |
5 |
5 |
1 |
1-x |
1 |
x2 |
2a |
a+1 |
a2-2a+1 |
a2-1 |
7 |
2 |
x-3 |
x2-1 |
x2-2x-3 |
x2+2x+1 |
1 |
x-1 |
2 |
1 |
1+a |
1 |
1+b |
x2 |
x2-y2 |
y2 |
x-y |
2x2y-2xy2 |
x2-2xy+y2 |
A.x+y | B.x-y | C.y-x | D.
|
© 2017-2019 超级试练试题库,All Rights Reserved.