1 |
2 |
1 |
2 |
1 |
16 |
1 |
2 |
1 |
2 |
1 |
4 |
1 |
4 |
1 |
4 |
1 |
16 |
1 |
4 |
1 |
4 |
A.(-a-b)(a+b) | B.(-a-b)(a-b) |
C.(a+b-c)(-a-b+c) | D.(-a+b)(a-b) |
A.(-6y+7x)(-6y-7x) | B.(-6y+7x)(6y-7x) |
C.(7x-4y)(7x+4y) | D.(-6y-7x)(6y-7x) |
2 |
3 |
2 |
3 |
1 |
2 |
1 |
4 |
1 |
2 |
A.(2a-b)(2a+3b) | B.(2a-b)(2a+b) | C.(a-b)(b-a) | D.(a+b)(a+b) |
1 |
3 |
2 |
3 |
© 2017-2019 超级试练试题库,All Rights Reserved.