Question

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

x = −15
x = −10
x = 1
x = 15

Answer 1

I think x=15 is the only zero among the options. This is because zeros are found when the additive opposites of terms in a parenthesis are used for x so -15 would be 15, +1would -1 and -10 would be 10
(When opposites are added the answer is zero and anything times zero is zero)