Question

find the value of k such that 3 is one of the zeros of the polynomial 2x square +x+k​

Answer 1

Step-by-step explanation:

Hello.. Here is the answer..

Given root of the equation=3

Which means that the value of x is 3.

Substituting the value of x with 3 we get,

2*3*3+3+k=0

18+3+k=0

21+k=0

k=-21

So the value of k is-21(Answer)

Hope this helped you!!

Answer 2

Since 3 is one of the zeroes of the given quadratic polynomial

therefore 2(3square) + 3 + k = 0

        2(9) + 3 + k = 0

      21 + k  = 0

              k = -21

Hope I helped :D