Question

if x+ 1 is a factor of x power 4 - 5x cube + 5x square + 5x- k then the value of k is​

Answer 1

Answer:

x+1=0

x=-1

x4-5x3+5x2+5x-k

(-1)4-5(-1)3+5(-1)2+5(-1)-k

1+5+5-5-k

6-k=0

k=6

Step-by-step explanation:

I hope this answer may help you