roots of equation

[Paulo2014]

1. The problem statement, all variables and given/known data
Find the range of values of k for which the roots of the equation
are not real.



2. Relevant equations
y = x2 + (k - 2) x + (k + 3)


3. The attempt at a solution
I have no idea...
1. The problem statement, all variables and given/known data



2. Relevant equations



3. The attempt at a solution

[dirk_mec1]

Look at the discriminant.

[tiny-tim]

Look at the discriminant.

Or complete the square (same result, obviously) :smile: