a-2 |
a2-1 |
2 |
1-a |
a-2 |
(a+1)(a-1) |
2 |
(a-1) |
a-2 |
(a+1)(a-1) |
2(a+1) |
(a+1)(a-1) |
a-2 |
(a+1)(a-1) |
2 |
a-1 |
a-2 |
(a+1)(a-1) |
2(a+1) |
(a+1)(a-1) |
a-2+2a+2 |
(a+1)(a-1) |
3a |
a2-1 |
2 |
1-a |
1 |
a-1 |
4 |
a2-4 |
1 |
a+2 |
1 |
2-a |
A.M=N | B.MN=1 | C.M+N=0 | D.不能确定 |
4 |
m-4 |
m |
4-m |
1-3x |
x2-1 |
M |
x+1 |
N |
x-1 |
1 |
x-1 |
© 2017-2019 超级试练试题库,All Rights Reserved.