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 |
a6 |
b17 |
2a+1 |
a2-1 |
a2-a |
a2-2a+1 |
1 |
a+1 |
2a+1 |
(a+1)(a-1) |
(a-1)2 |
a(a-1) |
1 |
a+1 |
2a+1 |
a(a+1) |
1 |
a+1 |
2a+1-a |
a(a+1) |
a+1 |
a(a+1) |
1 |
a |
1 |
4 |
x+3 |
(x-2)2 |
A |
x-2 |
B |
(x-2)2 |
x+3 |
(x-2)2 |
A(x-2)+B |
(x-2)2 |
x+3 |
(x-2)2 |
Ax+(-2A+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 |
1 |
2 |
1 |
x3 |
1 |
x2 |
1 |
x |
(x+y)2 |
xy |
(x-y)2 |
xy |
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