Find the range of kkk for which x2+kx+k=0x^2 + kx + k = 0x2+kx+k=0 has two distinct real roots.
k<0k < 0k<0 or k>4k > 4k>4
0<k<40 < k < 40<k<4
k>0k > 0k>0
k<4k < 4k<4