The integer k for which the inequality
x2−2(4k−1)x+15k2-2k−7>0 is valid for any x, is?
Discriminant should be less than 0 and a >0
D=b^2-4ac<0
The integer k for which the inequality x2−2(4k−1)x+15k2−2k−7>0 is valid for any x, is