x2 |
x4+3x2+1 |
A.
| B.
| C.10 | D.12 |
x2 |
x4+3x2+1 |
1 |
z |
1 |
x2 |
1 |
x |
1 |
x |
1 |
z |
1 |
10 |
A.甲 | B.乙 | C.一样 | D.不能确定 |
1 |
x2-2x |
1 |
x2-4x+4 |
2 |
x2-2x |
A.-
| B.
| C.-
| D.
|
a |
1+a |
b |
1+b |
a+b |
1+a+b |
x |
y+z |
y |
z+x |
z |
x+y |
x2 |
y+z |
y2 |
z+x |
z2 |
x+y |
a |
bc |
b |
ac |
c |
ab |
1 |
a |
1 |
b |
1 |
c |
© 2017-2019 超级试练试题库,All Rights Reserved.