Question

x square + 2 kx + 4 equals to zero to have a root x equal to 2 then find the value of k​

Answer 1

Answer:

It is given in the question that the value of x = 2.So, we will put 2 in place of x. And the process will be something like this

Step-by-step explanation:

x=2

2^2+2×k×2+4=0

4+4k+4=0

8+4k=0

4k= -8

k= -2

Answer 2

x²+2kx+4=0

x=2

(2)²+2k(2)+4=0

4+4k+4=0

8+4k=0

k=-8/4

k=-2

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