Question

if 6 is a zero of the polynomial x square -5x-k,then find the value of k​

Answer 1

Answer:

x sqaure -5x-k

put x=6

6 square -5(6)-k

36-30-k

6-k

k = -6

Answer 2

Answer:

Given:

X=6

Substitute X value in the following equation,

x²-5x-k=0

6²-5(6)-k=0

36-30-k=0

6-k=0

k=6.