3 years ago

Determine the valeur for k in the equation below: x2 + kx + 9 = 0

Mathematics

2 answers:

pickupchik [31]3 years ago

7 0

K = -9+x2 divides by x

Maru [420]3 years ago

3 0

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

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