Question

If p-1 is a factor of p^4+p^2+p-k,the value of k is ?

Answer 1

`1^4+1^2+1-k=0\\3-k=0\\k=3`

Answer 2

k=3

Explanation:

Hello, if p-1 is a factor of

`f(p)=p^4+p^2+p-k`

it means that f(1)=0, so

1+1+1-k=0

3-k=0

k=3

thank you