形如根号(m+或-2倍根号n)的化简,只要我们找到两个正数a.b,使得a+b=m,ab=n,使得(根号a )的平方+(根号b)的平方=m,(根号a)*(根号b )=n,那么便有根号(m+或-2倍根号n)=根号【(根号a+或-根号
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![形如根号(m+或-2倍根号n)的化简,只要我们找到两个正数a.b,使得a+b=m,ab=n,使得(根号a )的平方+(根号b)的平方=m,(根号a)*(根号b )=n,那么便有根号(m+或-2倍根号n)=根号【(根号a+或-根号](/uploads/image/z/2554062-6-2.jpg?t=%E5%BD%A2%E5%A6%82%E6%A0%B9%E5%8F%B7%EF%BC%88m%2B%E6%88%96-2%E5%80%8D%E6%A0%B9%E5%8F%B7n%29%E7%9A%84%E5%8C%96%E7%AE%80%2C%E5%8F%AA%E8%A6%81%E6%88%91%E4%BB%AC%E6%89%BE%E5%88%B0%E4%B8%A4%E4%B8%AA%E6%AD%A3%E6%95%B0a.b%2C%E4%BD%BF%E5%BE%97a%2Bb%3Dm%2Cab%3Dn%2C%E4%BD%BF%E5%BE%97%EF%BC%88%E6%A0%B9%E5%8F%B7a+%EF%BC%89%E7%9A%84%E5%B9%B3%E6%96%B9%2B%EF%BC%88%E6%A0%B9%E5%8F%B7b%EF%BC%89%E7%9A%84%E5%B9%B3%E6%96%B9%3Dm%2C%EF%BC%88%E6%A0%B9%E5%8F%B7a%EF%BC%89%2A%EF%BC%88%E6%A0%B9%E5%8F%B7b+%29%3Dn%2C%E9%82%A3%E4%B9%88%E4%BE%BF%E6%9C%89%E6%A0%B9%E5%8F%B7%EF%BC%88m%2B%E6%88%96-2%E5%80%8D%E6%A0%B9%E5%8F%B7n%EF%BC%89%3D%E6%A0%B9%E5%8F%B7%E3%80%90%EF%BC%88%E6%A0%B9%E5%8F%B7a%2B%E6%88%96-%E6%A0%B9%E5%8F%B7)
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