6x3y3 |
-3x2y |
3a2-ab |
9a2-6ab+b2 |
6x3y3 |
-3x2y |
3a2-ab |
9a2-6ab+b2 |
a(3a-b) |
(3a-b)2 |
a |
3a-b |
1.3x-1 |
2x-0.7y |
v-2s |
2s-u |
v-s |
s |
1 |
x |
1 |
y |
x+2xy+y |
2x-3xy+2y |
3x-2y |
5x+7y |
A.扩大10倍 | B.不变 | ||
C.由x,y的值确定 | D.缩小到原来的
|
(a-b)(b-c)(c-a) |
(b-a)(a-c)(c-b) |
A.-1 | B.0 | C.1 | D.2 |
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