题目
题型:填空题难度:一般来源:不详
m-1 |
x+2 |
1 |
x+2 |
答案
将x=-2代入得:m-2=-4+4,
解得:m=2.
故答案为:2
核心考点
举一反三
3 |
x+2 |
a |
x+2 |
a |
x+1 |
2a-x-1 |
x2+x |
1 |
x-1 |
1 |
x2-1 |
A.1 | B.-1 | C.±1 | D.0 |
1-x |
2x-1 |
4 |
2-4x |
x+1 |
x |
x+2 |
x-1 |
4x2+2x |
x2-2x+1 |
x |
x-1 |
2 |
x |
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