1 |
x |
2 |
x+2 |
1 |
x |
3 |
x+3 |
1 |
x |
4 |
x+4 |
1 |
x |
5 |
x+5 |
1 |
x |
1+1 |
x+1+1 |
1 |
x |
2+1 |
x+2+1 |
1 |
x |
3+1 |
x+3+1 |
1 |
x |
n+1 |
x+n+1 |
n+1 |
n |
n+1 |
n |
A.只要是分式方程,一定有增根 |
B.分式方程若有增根,增根代入最简公分母中,其值一定为0 |
C.使分式方程中分母为零的值,都是此方程的增根 |
D.分式方程化成整式方程,整式方程的解都是分式方程的解 |
ax |
x+2 |
A.1 | B.2 | C.3 | D.4 |
1+x |
5+x |
1 |
2 |
1 |
x |
4 |
x+3 |
A.x=3 | B.x=
| C.x=2 | D.x=1 |
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