第一题求下列各圆的方程:1.圆心为M(-5,3),且过点A(-8,-1);2.过三点A(-2,4),B(-1,3),C(2,6).1.半径r=|MA|=(-8+5)²+(-1-3)²根号(打不出来,在这整个式子上)=9+16根号(打不出来,就是在9+16上)=5第二题若方
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![第一题求下列各圆的方程:1.圆心为M(-5,3),且过点A(-8,-1);2.过三点A(-2,4),B(-1,3),C(2,6).1.半径r=|MA|=(-8+5)²+(-1-3)²根号(打不出来,在这整个式子上)=9+16根号(打不出来,就是在9+16上)=5第二题若方](/uploads/image/z/1859591-47-1.jpg?t=%E7%AC%AC%E4%B8%80%E9%A2%98%E6%B1%82%E4%B8%8B%E5%88%97%E5%90%84%E5%9C%86%E7%9A%84%E6%96%B9%E7%A8%8B%3A1.%E5%9C%86%E5%BF%83%E4%B8%BAM%28-5%2C3%29%2C%E4%B8%94%E8%BF%87%E7%82%B9A%28-8%2C-1%29%EF%BC%9B2.%E8%BF%87%E4%B8%89%E7%82%B9A%28-2%2C4%29%2CB%28-1%2C3%29%2CC%EF%BC%882%2C6%29.1.%E5%8D%8A%E5%BE%84r%3D%7CMA%7C%3D%28-8%2B5%29%26sup2%3B%2B%28-1-3%29%26sup2%3B%E6%A0%B9%E5%8F%B7%28%E6%89%93%E4%B8%8D%E5%87%BA%E6%9D%A5%2C%E5%9C%A8%E8%BF%99%E6%95%B4%E4%B8%AA%E5%BC%8F%E5%AD%90%E4%B8%8A%29%3D9%2B16%E6%A0%B9%E5%8F%B7%28%E6%89%93%E4%B8%8D%E5%87%BA%E6%9D%A5%2C%E5%B0%B1%E6%98%AF%E5%9C%A89%2B16%E4%B8%8A%29%3D5%E7%AC%AC%E4%BA%8C%E9%A2%98%E8%8B%A5%E6%96%B9)
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