不等式 如果abc为互不相等的数,且b²+c²=2a²+16a+14,bc=a²-4a-5求a的取值范围最好用简单点的方法,看不懂额
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![不等式 如果abc为互不相等的数,且b²+c²=2a²+16a+14,bc=a²-4a-5求a的取值范围最好用简单点的方法,看不懂额](/uploads/image/z/5411211-51-1.jpg?t=%E4%B8%8D%E7%AD%89%E5%BC%8F+%E5%A6%82%E6%9E%9Cabc%E4%B8%BA%E4%BA%92%E4%B8%8D%E7%9B%B8%E7%AD%89%E7%9A%84%E6%95%B0%2C%E4%B8%94b%26sup2%3B%2Bc%26sup2%3B%3D2a%26sup2%3B%2B16a%2B14%2Cbc%3Da%26sup2%3B-4a-5%E6%B1%82a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%9C%80%E5%A5%BD%E7%94%A8%E7%AE%80%E5%8D%95%E7%82%B9%E7%9A%84%E6%96%B9%E6%B3%95%EF%BC%8C%E7%9C%8B%E4%B8%8D%E6%87%82%E9%A2%9D)
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