Question

The least positive value of m for which the equation x^2 + mx +4 = 0 has real roots​

Answer 1

Answer:

The real roots is 4.

Step-by-step explanation:

Here the given equation is,

=> X²+MX+4 = 0

Here

a = 1,b = m, & c =4.

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

Thus,

m²-4×1×4≥0

m² ≥ 16

m ≥±4

m∈[-∞,-4]∪[4-∞]

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

Answer 2

Answer:

m=±4

Step-by-step explanation:

has real roots=b^2 - 4 ac

=m^2 - 16

m=±4

this is the required answer