Question

Find the zeros of the function.

f(x) = 9x3 + 18 x2 - 135x

-5 and 3

5 and -3

0, 5, and -3

0, -5, and 3

Answer 1

you have 3 zeros due to it is to the third power

Answer 2

just sub your values and see if they are zero
f(a)=0 then it is a zero