几道高一书上的练习题··急!1.由方程X2-9=0的所有实数根组成的集合2.由小于8的所有素数组成的集合3.一次方程Y=X+2与Y=-2X+6的图像的交点组成的集合4.不等式4X-5<3的解集试选择适当的方法表示
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![几道高一书上的练习题··急!1.由方程X2-9=0的所有实数根组成的集合2.由小于8的所有素数组成的集合3.一次方程Y=X+2与Y=-2X+6的图像的交点组成的集合4.不等式4X-5<3的解集试选择适当的方法表示](/uploads/image/z/14475506-50-6.jpg?t=%E5%87%A0%E9%81%93%E9%AB%98%E4%B8%80%E4%B9%A6%E4%B8%8A%E7%9A%84%E7%BB%83%E4%B9%A0%E9%A2%98%C2%B7%C2%B7%E6%80%A5%211.%E7%94%B1%E6%96%B9%E7%A8%8BX2-9%3D0%E7%9A%84%E6%89%80%E6%9C%89%E5%AE%9E%E6%95%B0%E6%A0%B9%E7%BB%84%E6%88%90%E7%9A%84%E9%9B%86%E5%90%882.%E7%94%B1%E5%B0%8F%E4%BA%8E8%E7%9A%84%E6%89%80%E6%9C%89%E7%B4%A0%E6%95%B0%E7%BB%84%E6%88%90%E7%9A%84%E9%9B%86%E5%90%883.%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8BY%3DX%2B2%E4%B8%8EY%3D-2X%2B6%E7%9A%84%E5%9B%BE%E5%83%8F%E7%9A%84%E4%BA%A4%E7%82%B9%E7%BB%84%E6%88%90%E7%9A%84%E9%9B%86%E5%90%884.%E4%B8%8D%E7%AD%89%E5%BC%8F4X-5%EF%BC%9C3%E7%9A%84%E8%A7%A3%E9%9B%86%E8%AF%95%E9%80%89%E6%8B%A9%E9%80%82%E5%BD%93%E7%9A%84%E6%96%B9%E6%B3%95%E8%A1%A8%E7%A4%BA)
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