Question

find the least positive value of k for equation x² + kx + 4 = 0 has real roots​

Answer 1

Step-by-step explanation:

Here, the given equation is,

⇒x

2

+kx+4=0

Here,

a=1, b=k, c=4

If the equation is supposed to have real roots, then D≥0. Thus,

k

2

−4×1×4≥0

k

2

≥16

k≥±4

k∈(−∞,−4]∪[4,∞)

Hence, the least positive value of k for which the equation has real roots is 4.

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Answer 2

Answer:

positive value............ oooooooo