Question

A polynomial p(x) is given as 2x^2-3kx+8
One of the zeros of p(x) is -1
find k

Answer 1

Answer:

p(x) = 2x^2 - 3kx +8

since -1 is a zero of p(x),

p(-1)=0

0 = 2(-1)^2 - 3k(-1) + 8

0 = 2 + 3k + 8

0 = 10 + 3k

3k = -10

k = -10/3