Hi everyone, I am new in this forum. Anyway I have been struggling with an inequality question in my homework, unfortunately due in tomarrow.

Find the value of k for the following equation which has 2 real roots

Kx^2 + kx + 2 = 0

Now I have found that: b^2 -4ac

k^2 - 4*k*2> 0

K^2 -8k > 0

I do not understand what to do after this stage because it is not possible to expand the brackets or square root the 8