x-8 |
x-7 |
1 |
7-x |
A.解为x=7 | B.解为x=8 | C.解为x=15 | D.无解 |
x |
x+2 |
2 |
x2-4 |
x+7 |
x+6 |
x+9 |
x+8 |
x+10 |
x+9 |
x+6 |
x+5 |
1 |
x(x-1) |
1 |
(x-1)(x-2) |
1 |
(x-1991)(x-1992) |
1 |
x |
2 |
x2-1 |
1 |
x-1 |
2-x |
x-3 |
2 |
3-x |
x |
x-2 |
2 |
x2-4 |
x2-4 |
x2-4x+4 |
x-2 |
x+2 |
2 |
2 |
x-4 |
m |
4-x |
A.-2 | B.2 | C.4 | D.-4 |
© 2017-2019 超级试练试题库,All Rights Reserved.