Question

OR
For what value of k, -2 is a root of the equation 3x2 + 4x + 2k=0? ​

Answer 1

Step-by-step explanation:

put x= -2 in the given equation , we have

3(-2)^2+4(-2)+2k=0

→ 12 -8+2k=0.→2k+4=0→k= -4/2=-2

Answer 2

Answer:

put x =-2

3×-2^2+4×-2+2k=0

12-8+2k=0

-4+2k=0

2k=4

k=4/2

k=2