Question

Which of the following is a zero for the function f(x) = (x – 15)(x + 1)(x – 10)?

a. x = –15
b. x = –10
c. x = 1
d. x = 15

Answer 1

It's d because β is a zero if it's written in this way: (x-β).
So the zeros are x={-1,10,15}