-2x+b |
2x+1+ a |
-20+b |
2 + a |
-2x+1 |
2x+1+ a |
-2-1+1 |
20+ a |
-21+1 |
22+ a |
-2x+1 |
2x+1+ 2 |
-2-x+1 |
2-x+1+ 2 |
-2x+1 |
2x+1+ 2 |
-2x+1 |
2x+1+ 2 |
1 |
2 |
2 |
2x+1 |
1 |
2 |
2 |
2x1+1 |
1 |
2 |
2 |
2x2+1 |
2(2x2-2x1) |
(2x1+1)(2x2+1) |
1 |
3 |
1 |
3 |
A.(1,-3) | B.(1,-2) | C.(2,-3) | D.(2,-2) |
A.a>2 | B.0<a<1 | C.2<a<3 | D.a>3 |
1 |
8 |
1 |
2 |
4 | 32 |
m |
4 |
A.7 | B.8 | C.9 | D.10 |
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