Question

If -4 is a root of the quadratic equation x2+px-4=0 and the quadratic equation x2+px+k=0 has equal roots, find the value of k.

Answer 1

Answer:

Hope your problem is solved.

Answer 2

Step-by-step explanation:

x2 + px -4=0

(-4)^2 + p(-4) - 4=0

16 -4p -4 = 0

12-4p=0

12=4p

p=3

x2 + px + k=0

(-4)^2 + (3)(-4) + k=0

16-12+k=0

4 + k=0

k= -4