Question

2) The linear factors of the quadratic equation x²+Kx+1=0 are
a) K≥2 b) k≤2 c) k≥ −2 d) 2 ≤ ≤ −2​

Answer 1

Step-by-step explanation:

so answer is k≤2 and k≥-2 because k is +2 and -2 both

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Answer 2

Step-by-step explanation:

b²-4ac≥0

k²-4≥0

k²≥4

k≥ ±2

=> -2≤ k≤2

option (c) is correct => k≥ -2