△=(4k)²-4*2(k+1)(2k-1)
=16k²-8(2k²+k-1)
=16k²-16k²-8k+8
=8(1-k)
∵k＜1
∴1-k＞0
∴△＞0
∴方程有(2个不相等)实数根