3x2-7x+2 |
(x-1)(x+1) |
A |
x-1 |
B |
x+1 |
3x2-7x+2 |
(x-1)(x+1) |
A |
x-1 |
B |
x+1 |
3x2-7x+2 |
(x-1)(x+1) |
3(x2-1)+A(x+1)+B(x-1) |
(x-1)(x+1) |
3x2-7x+2 |
(x-1)(x+1) |
3x2+(A+B)x-3+A-B |
(x-1)(x+1) |
|
a2(
| ||||||||||||
a(
|
A.abc | B.a+b+c | C.
| D.-(a+b+c) |
1 |
a2+a |
1 |
a2+2a+1 |
|a-
| ||||
a+1 |
a-b |
a+b |
b |
a |
A.
| B.
| C.
| D.
|
a |
1+a+ab |
b |
1+b+bc |
c |
1+c+ca |
a+b |
c |
b+c |
a |
c+a |
b |
(a+b)(b+c)(c+a) |
abc |
A.8 | B.8或-1 | C.2或-1 | D.8或-1 |
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