Question

What are the zeros of the function, f(x)=x^2-2x-15

Answer 1

factor
wat adds to -2 and times to get -15
-5 and 3
(x+3)(x-5)=0
set to zero

x+3=0
x=-3

x-5=0
x=5

x=-3 or 5

Answer 2

Zeros of the function are -3 and 5.