Question

For what value of k ,is -3 a zero of polynomial x²+x+k?

Answer 1

x=-3

(-3)²-3+k=0

9-3+k=0

k=-6

Answer 2

Answer:

k=-6

Step-by-step explanation:

p(x)=x2+x+k

g(x)=x+3

x=-3

p(-3)=(-3)sq.+(-3)+k

=9-3+k

=6+k

k=-6