Question

Show that y-1 is a factor of y20

-1 and y21

-1 .​

Answer 1

Answer:

p(y) = 1

so,

${1}^{20} - 1 = 0$

${1}^{21} - 1 = 0$

hence y-1 is a factor

Answer 2

Answer:

hence y- 1 is a factor of y 20 -. 1 and y 21- 1.

Step-by-step explanation:

I hope it's helpful to you