題目列表(包括答案和解析)
1 |
a+3 |
6 |
9-a2 |
1 |
a+3 |
6 |
(a+3)(a-3) |
a-3 |
(a+3)(a-3) |
6 |
(a+3)(a-3) |
x-3 |
x2-1 |
3 |
1-x |
x-3 |
(x-1)(x+1) |
3 |
x-1 |
x-3 |
(x-1)(x+1) |
3(x+1) |
(x-1)(x+1) |
x-3 |
x2-1 |
3 |
1-x |
x-3 |
(x+1)(x-1) |
3 |
x-1 |
x-3 |
(x+1)(x-1) |
3(x+1) |
(x+1)(x-1) |
x-18 |
x2-4 |
4 |
2-x |
x-18 |
(x-2)(x+2) |
4 |
x-2 |
x-18 |
(x-2)(x+2) |
4(x+2) |
(x-2)(x+2) |
x-3 |
x2-1 |
3 |
1-x |
x-3 |
(x+1)(x-1) |
3 |
x-1 |
x-3 |
(x+1)(x-1) |
3(x+1) |
(x+1)(x-1) |
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