For which values of mmm does the quadratic equation x2+mx+4=0x^2 + mx + 4 = 0x2+mx+4=0 have no real solutions?
−4<m<4-4 < m < 4−4<m<4
m<−4m < -4m<−4
m>4m > 4m>4
m=4m = 4m=4