方程2x²+(m-1)x-6=0的一个根是2,则m=( ),另一个x2=( )方程2x²-mx-4=0的两根为x1和x2,且 1 1 —— + —— = 2,实数m的值为( ) x1 x2 如果方程x²+mx=1的两个实数根互为相反数那么m的值为
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![方程2x²+(m-1)x-6=0的一个根是2,则m=( ),另一个x2=( )方程2x²-mx-4=0的两根为x1和x2,且 1 1 —— + —— = 2,实数m的值为( ) x1 x2 如果方程x²+mx=1的两个实数根互为相反数那么m的值为](/uploads/image/z/1637802-18-2.jpg?t=%E6%96%B9%E7%A8%8B2x%26%23178%3B%2B%EF%BC%88m-1%EF%BC%89x-6%3D0%E7%9A%84%E4%B8%80%E4%B8%AA%E6%A0%B9%E6%98%AF2%2C%E5%88%99m%3D%EF%BC%88+%EF%BC%89%2C%E5%8F%A6%E4%B8%80%E4%B8%AAx2%3D%EF%BC%88+%EF%BC%89%E6%96%B9%E7%A8%8B2x%26%23178%3B-mx-4%3D0%E7%9A%84%E4%B8%A4%E6%A0%B9%E4%B8%BAx1%E5%92%8Cx2%2C%E4%B8%94+1+1+%E2%80%94%E2%80%94+%2B+%E2%80%94%E2%80%94+%3D+2%2C%E5%AE%9E%E6%95%B0m%E7%9A%84%E5%80%BC%E4%B8%BA%EF%BC%88+%EF%BC%89+x1+x2+%E5%A6%82%E6%9E%9C%E6%96%B9%E7%A8%8Bx%26%23178%3B%2Bmx%3D1%E7%9A%84%E4%B8%A4%E4%B8%AA%E5%AE%9E%E6%95%B0%E6%A0%B9%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%E9%82%A3%E4%B9%88m%E7%9A%84%E5%80%BC%E4%B8%BA)
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