若ax^2+bx+c>0的解集为{x -2f(5)B f(2)>f(5)>f(-1)C f(-1)f(2)要解析,
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![若ax^2+bx+c>0的解集为{x -2f(5)B f(2)>f(5)>f(-1)C f(-1)f(2)要解析,](/uploads/image/z/12575059-43-9.jpg?t=%E8%8B%A5ax%5E2%2Bbx%2Bc%3E0%E7%9A%84%E8%A7%A3%E9%9B%86%E4%B8%BA%7Bx+-2f%285%29B+f%282%29%3Ef%285%29%3Ef%28-1%29C+f%28-1%29f%282%29%E8%A6%81%E8%A7%A3%E6%9E%90%2C)
若ax^2+bx+c>0的解集为{x -2f(5)B f(2)>f(5)>f(-1)C f(-1)f(2)要解析,
若ax^2+bx+c>0的解集为{x -2f(5)B f(2)>f(5)>f(-1)C f(-1)f(2)要解析,
若ax^2+bx+c>0的解集为{x -2f(5)B f(2)>f(5)>f(-1)C f(-1)f(2)要解析,
ax²+bx+c>0的解集为{x|-2f(5)
f(2)>f(-1)>f(5)
选A