Question

f the equation 9 x ^2 + 12kx + 8 =0 has equal roots, then the value of k is

Answer is
± 2
± 1
± 3
±√2

Answer 1

Step-by-step explanation:

9 x ^2 + 12kx + 8 =0

9x^2+12kx= -8

12kx= -8 -9x^2

k= (-8 -9x^2)/12x

k=±✓2