Wow, using grammar makes me feel like an adult!

I asked my teacher if we could use that she said it's considered cheating, I still use it

Step-by-step explanation:

answer is c

step-by-step explanation:

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option