xn(y2n-1) |
xn+1(yn+1) |
xn(y2n-1) |
xn+1(yn+1) |
xn(yn+1)(yn-1) |
xn•x(yn+1) |
yn-1 |
x |
a2-4a+4 |
a2-4 |
x2-3x |
9-x2 |
-3x+1 |
-x2+7x-2 |
A.
| B.
| ||||
C.
| D.
|
A.
| B.
| ||||||||
C.
| D.
|
16a2-b2 |
4a+b |
16a2-b2 |
4a+b |
(4a+b)(4a-b) |
4a+b |
16a2-b2 |
4a+b |
(16a2-b2)(4a-b) |
(4a+b)(4a-b) |
A.都正确 | B.小明正确,小华不正确 |
C.小华正确,小明不正确 | D.都不正确 |
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