1 |
x-3 |
6 |
9-x2 |
x-1 |
6-2x |
x+2y |
x+y |
x |
y |
x |
y |
x |
x-y |
1 |
x-3 |
6 |
9-x2 |
x-1 |
6-2x |
2(x+3) |
2(x2-9) |
12 |
2(x2-9) |
(x-1)(x+3) |
2(x2-9) |
2x+6-12+x2+3x-x-3 |
2(x2-9) |
x2+4x-9 |
2(x2-9) |
x+2y |
x+y |
x |
y |
x |
y |
x |
x-y |
y(x+2y)-x(x+y) |
y(x+y) |
x(x-y)+2y(x-y)-xy |
y(x-y) |
2y2-x2 |
y(x+y) |
y(x-y) |
x2-2y2 |
x-y |
x+y |
4a2-4ab+b2 |
2a-b |
1 |
2 |
x+2 |
x2-2x |
x-1 |
x2-4x+4 |
x-4 |
x |
A.
| B.x÷
| ||||||
C.
| D.a6÷a2=a3 |
1 |
a |
1 |
b |
(ab)2 |
a2-b2 |
2x |
x+1 |
x2-2x+1 |
x2-1 |
4 |
1 |
2 |
|
3 |
(x2-1)(x+1) |
x2-x |
x2+1 |
2x |
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