Answer:
k = 5
Step-by-step explanation:
[tex](x + 2)(x + 3) = {x}^{2} + 5x + 6[/tex]
Now comparing left hand side & right hand side ,
[tex] {x}^{2} + kx + 6 = {x}^{2} + 5x + 6[/tex]
Cancelling x^2 & 6 from both left hand side & right hand side ,
kx = 5x
=> k = 5