A.a4-9b2=(a2-3b)2 | B.8x-4x2-4=-4(x+1)2 | ||||||||||
C.
| D.4x2-
|
1 |
4 |
1 |
4 |
1 |
4 |
4 |
3 |
1 |
9 |
1 |
3 |
A.a(a2-2ab+b2) | B.a(a-b)2 | C.(a-b)(a2-ab) | D.a3-ab(2a-b) |
A.a(a2-4) | B.a2(a-
| C.a(a+2)(a-2) | D.a(a-2)2 |
A.4a(x2-y2) | B.a(x2-4y2) | C.a(x+2y)(x-2y) | D.4a(x+y)(x-y) |
A.3(x2-9) | B.3(x+3)2 | C.(3x+3)(3x-9) | D.3(x+3)(x-3) |
1 |
32 |
A.-a(2-
| B.2a(1-
| C.-2a(1-
| D.-2a(1+
|
© 2017-2019 超级试练试题库,All Rights Reserved.