Question

guys help me out if -4 is a root of the quadratic equation $x^{2} +px-4=0$ and the quadratic equation $x^{2} +px+k=0$ has equal roots find the value of k

Answer 1

-4 is root of given equation
So 16-4p-4=0
12-4p=0
P=3
And for equal roots D=0
9-4*1*k=0
4K=9
K=9/4