Question

Explain how to sketch a graph of the function f(x) = x3 + 2x2 – 8x. Be sure to include end-behavior, zeroes, and intervals where the function is positive and negative.

Answer 1

is calculus allowed?

Answer 2

if for algebra2

Answer 3

did you guys go over the first derivative and 2nd derivative rules?

Answer 4

no

Answer 5

ok, then non calculus approach

first you determine the zeros
set f(x)=0 and then solve for the zeros

Answer 6

tell me when you get the zeros, or say something if you dont know how