k |
x-3 |
4-x |
x-3 |
A.0 | B.3 | C.4 | D.1 |
x-1 |
x-2 |
m |
2-x |
1 |
1-3x |
3 |
2 |
2 |
3x-1 |
2 |
x |
x |
x+1 |
A.2(x+1)-x2=1 | B.2(x+1)+x2=1 |
C.2(x+1)-x2=x(x+1) | D.2x-(x+1)2=x(x+1) |
2ax+3 |
a-x |
3 |
4 |
A.1 | B.3 | C.-1 | D.-3 |
2 |
x+1 |
3 |
x-1 |
6 |
x2-1 |
A.方程两边分式的最简公分母是x2-1 |
B.方程两边都乘以(x2-1),得整式方程2(x-1)+3(x+1)=6 |
C.解这个整式方程得:x=1 |
D.原方程的解为x=1 |
© 2017-2019 超级试练试题库,All Rights Reserved.