Question

Find the values of k if 2x2 + kx +8 = 0 has real roots.

Answer 1

if it has real roots ,then
D > 0
b^2-4ac >0
k^2-4×8×2>0
k^2>64
k>8
therefore k can be any value except lower than 8
it should be always greater than 8

Answer 2

Answer:

Step-by-step explanation:

Hope it helps.