Question

for what value of k , 3 is a zero of the polynomial 2x^2+x+k?

Answer 1

Hey

Here is your answer,

Substitute the value of x in equation to find the value of k.

2x^2+x+k=0
2(3)^2+3+k=0
2x9+3+k=0
18+3+k=0
k=-21

Hope it helps you!

Answer 2

Hey friend here is your answer

3 is a zero of the polynomial means that value of X is 3

So put x=3

It becomes , 2(9)+3+k=0

18+3++k=0

21+k=0

K=-21


Hope it helps you

Pls mark brainliest