Question

if -4 is the zero of the polynomial p(x) = x2 + 11x + k
2 means square

Answer 1

given that,,
p(x)=-4

x^+11x+k=0
-4^+11×-4^+k=0

-16+11×-16+k=0

16=-176+k
k=16+176

k=192

Answer 2

x²+11x+k
x=-4
so,
(-4)²+11(-4)+k
16-44+k=0
-28+k=0
k=28