1. The problem statement, all variables and given/known data Use the disciminant to determine all values of k that would result in the equation x^2 - kx + 4 = 0 having equal roots. 2. Relevant equations x = -b +/- (square root) b^2 - 4ac and divide by 2a or b^2 - 4ac 3. The attempt at a solution a = 1 b = - 1 c = 4 I'm a little confused with this problem because instead of a number by b there's a k.