SOLUTION: Could you please help me with this? The roots of the equation (x – 1)(x + k) = -4 are equal. Find the values of k

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Could you please help me with this? The roots of the equation (x – 1)(x + k) = -4 are equal. Find the values of k      Log On


   

Question 986776: Could you please help me with this?
The roots of the equation (x – 1)(x + k) = -4 are equal. Find the values of k
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
That means one solution only.
x%5E2-x%2Bkx-k%2B4=0
x%5E2%2B%28k-1%29x%2B4-k=0

You must have discriminant equal to 0.
Go from there.