x+2y |
x2-4y2 |
3a2-ab |
9a2-6ab+b2 |
3 |
4 |
2 |
3 |
x+2y |
x2-4y2 |
x+2y |
(x+2y)(x-2y) |
1 |
x-2y |
1 |
5-2×3.5 |
1 |
2 |
3a2-ab |
9a2-6ab+b2 |
a(3a-b) |
(3a-b)2 |
a |
3a-b |
3 |
4 |
2 |
3 |
| ||||
3×
|
9 |
35 |
a-b |
2 |
x-3 |
x |
1+a |
π |
a-b |
a+b |
A.1个 | B.2个 | C.3个 | D.4个 |
x+b |
ax-2 |
b |
a |
3 |
x-1 |
A.x=1 | B.x≠1 | C.x>1 | D.x<1 |
|x|-4 |
(x-4)(x+1) |
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