Question

for what value of k is 3zero of polynomial 2x+x+k

Answer 1

Answer:

k=-9

Step-by-step explanation:

here

p(x)=2x+×+k

3 is the zero of the p(×)

therefore we can use '3' instead of' x'

p(3)=2(3)+3+k

=6+3+k

=9+k

when we change the side of 9 it become negative

therefore k=-9