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9 January, 13:34

Determine the valeur for k in the equation below:

x2 + kx + 9 = 0

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Answers (2)
  1. 9 January, 14:52
    0
    K = - 9+x2 divides by x
  2. 9 January, 14:52
    0
    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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