关于X的两个方程,① X²+(M+1)X+M-5=0 ② MX²+(N-1)X+M-4=0已知方程①有两个不相等的负实数根,方程②有两个实数根1.求证:方程②的两根符号相同 2.设方程②的两根分别为α和β,若α:β=1:3且N为
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![关于X的两个方程,① X²+(M+1)X+M-5=0 ② MX²+(N-1)X+M-4=0已知方程①有两个不相等的负实数根,方程②有两个实数根1.求证:方程②的两根符号相同 2.设方程②的两根分别为α和β,若α:β=1:3且N为](/uploads/image/z/6814507-67-7.jpg?t=%E5%85%B3%E4%BA%8EX%E7%9A%84%E4%B8%A4%E4%B8%AA%E6%96%B9%E7%A8%8B%2C%E2%91%A0+X%26sup2%3B%2B%28M%2B1%29X%2BM-5%3D0+%E2%91%A1+MX%26sup2%3B%2B%28N-1%29X%2BM-4%3D0%E5%B7%B2%E7%9F%A5%E6%96%B9%E7%A8%8B%E2%91%A0%E6%9C%89%E4%B8%A4%E4%B8%AA%E4%B8%8D%E7%9B%B8%E7%AD%89%E7%9A%84%E8%B4%9F%E5%AE%9E%E6%95%B0%E6%A0%B9%2C%E6%96%B9%E7%A8%8B%E2%91%A1%E6%9C%89%E4%B8%A4%E4%B8%AA%E5%AE%9E%E6%95%B0%E6%A0%B91.%E6%B1%82%E8%AF%81%3A%E6%96%B9%E7%A8%8B%E2%91%A1%E7%9A%84%E4%B8%A4%E6%A0%B9%E7%AC%A6%E5%8F%B7%E7%9B%B8%E5%90%8C+2.%E8%AE%BE%E6%96%B9%E7%A8%8B%E2%91%A1%E7%9A%84%E4%B8%A4%E6%A0%B9%E5%88%86%E5%88%AB%E4%B8%BA%CE%B1%E5%92%8C%CE%B2%2C%E8%8B%A5%CE%B1%3A%CE%B2%3D1%3A3%E4%B8%94N%E4%B8%BA)
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