已知-2a<x<3a,化简12√(x²+ax+a²/4)-2√(x²-6ax+9a²)要过程..谢、请尽快
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/25 16:47:21
![已知-2a<x<3a,化简12√(x²+ax+a²/4)-2√(x²-6ax+9a²)要过程..谢、请尽快](/uploads/image/z/1998928-64-8.jpg?t=%E5%B7%B2%E7%9F%A5-2a%EF%BC%9Cx%EF%BC%9C3a%2C%E5%8C%96%E7%AE%8012%E2%88%9A%EF%BC%88x%26%23178%3B%2Bax%2Ba%26%23178%3B%2F4%EF%BC%89-2%E2%88%9A%EF%BC%88x%26%23178%3B-6ax%2B9a%26%23178%3B%EF%BC%89%E8%A6%81%E8%BF%87%E7%A8%8B..%E8%B0%A2%E3%80%81%E8%AF%B7%E5%B0%BD%E5%BF%AB)
已知-2a<x<3a,化简12√(x²+ax+a²/4)-2√(x²-6ax+9a²)要过程..谢、请尽快
已知-2a<x<3a,化简12√(x²+ax+a²/4)-2√(x²-6ax+9a²)要过程..谢、请尽快
已知-2a<x<3a,化简12√(x²+ax+a²/4)-2√(x²-6ax+9a²)要过程..谢、请尽快
-2a<x<3a
12√(x²+ax+a²/4)-2√(x²-6ax+9a²)=12√(x+a/2)²-2√(x-3a)²
x<3a所以 x-3a