Question

Find all the real zeros of

f(x)=3x^3-9x^2+3x-9


Can someone help me please

Answer 1

x=0,3

Explanation:

start by dividing every term by 3

x^3-3x^2+x-3

group into 2 terms

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

simplify as much as you can

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

combine terms

(x^2)(x-3)

x=3, 0