Question

If x2 + 2 kx + 4 = 0 has a root x = 2 , then the value of k is ?
( A ) - 1
( B ) - 2
( C ) 2
( D ) -4​

Answer 1

Answer:

B is answer of what you asked

Answer 2

Answer:

Hope it help u

Step-by-step explanation:

x2+2kx+4=0

put the value of x in above equation

2x2+2k2+4=0

4+4k+4=0

8+4k=0

k=-2

hope it help u....