# find the zeros of...

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#### bigwave

since this is already factored out

f(x)=x^2(x+3)(x^2-1)?

$$\displaystyle x^2(x+3)(x^2-1) = 0$$
if $$\displaystyle x^2 = 0$$ then $$\displaystyle x = 0$$
if $$\displaystyle x+3=0$$ then $$\displaystyle x=-3$$
if $$\displaystyle x^2-1 = 0$$ then$$\displaystyle x= 1$$or $$\displaystyle x= -1$$