Answer :
Answer:
Step-by-step explanation:
Disc.=k²-4×9
roots are real if k²-36≥0
|k|≥ 6
k≤- 6
or k≥ 6
roots are imaginary if k²-36≤0
k²≤ 36
|k|≤6
roots are imaginary if -6 ≤ k ≤6
Answer:
Step-by-step explanation:
Disc.=k²-4×9
roots are real if k²-36≥0
|k|≥ 6
k≤- 6
or k≥ 6
roots are imaginary if k²-36≤0
k²≤ 36
|k|≤6
roots are imaginary if -6 ≤ k ≤6
