Question

If -4 is a root of quadratic equation x ^ 2 + px + 4=0 and the quadratic equation x ^ 2 + px + k=0 has equal roots .The valueb of k

Answer 1

Answer:

so p= 5

putting in 2nd equation

also b^2-4ac = 0

so

25-4×1×k = 0

4k = 25

k= 25/4 = 6.25

Answer 2

plz refer to this attachment