Find all real values of kkk such that x2−2kx+k+6=0x^2 - 2kx + k + 6 = 0x2−2kx+k+6=0 has two distinct real roots.
k<−2k < -2k<−2 or k>3k > 3k>3
−2<k<3-2 < k < 3−2<k<3
k≤−2k \leq -2k≤−2 or k≥3k \geq 3k≥3
k>3k > 3k>3