1 |
x2-y2 |
1 |
x+y |
A.x-y | B.x+y | C.x2-y2 | D.(x2-y2)(x+y) |
1 |
x2-y2 |
1 |
x+y |
-5 |
2a |
2 |
9a2b3 |
7c |
12a4b2 |
1 |
x+y |
1 |
x2-y2 |
1 |
x-y |
A.(x+y)(x2-y2) | B.(x2-y2)2 | C.(x+y2)(x-y) | D.x2-y2 |
1 |
x+y |
2x |
x2-y2 |
y |
2(y-x) |
A.(x2-y2)(x-y) | B.(x2-y2)(x+y)(x-y) |
C.2(x+y)(x-y) | D.x2-y2 |
1 |
m2-3m |
1 |
m2-9 |
1 |
x2-4 |
x |
4-2x |
A.(x+2)(x-2) | B.2(x+2)(x-2) | C.2(x+2)(x-2)2 | D.-(x+2)(x-2) |
© 2017-2019 超级试练试题库,All Rights Reserved.