17.二次方程x2+kx+2k−1=0x^{2}+kx+2k-1=0x2+kx+2k−1=0的两个根x1x_{1}x1与x2x_{2}x2,当−2<x1<−1-2<x_{1}<-1−2<x1<−1,1<x2<21<x_{2}<21<x2<2时,则实数kkk的取值范围为___(−34,0)(-\frac{3}{4},0)(−43,0)___.