A.20080=0 | B.(
| ||||
C.(a-3)2=a9(a≠0) | D.a2÷a-3=a5(a≠0) |
1 |
2 |
2a+1 |
a2-1 |
a2-a |
a2-2a+1 |
1 |
a+1 |
x+3 |
(x-2)2 |
A |
x-2 |
B |
(x-2)2 |
2 |
x+1 |
3 |
x-1 |
6 |
x2-1 |
1 |
2 |
π |
3 |
x2 |
x+1 |
3 |
x |
6 |
x-1 |
7 |
x2-x |
A.20090=0 | B.(
| ||||
C.(a-3)2=a9 | D.a2÷a-3=a5 (a≠0) |
1 |
2 |
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