Can anybody please tell me how to solve the following equation?

k^2 - 8K + 8 = 0

See here:

https://www.askmehelpdesk.com/mathematics/how-factorise-following-quadratic-equation-335050.html

Use the quadratic formula, it's not a whole number. You will get like k = -1.17 and k =-6.82. Try it yourself.

Thanks a lot Everyone :)!!