# find the zeros of...

• May 18th 2010, 12:00 PM
eichyess
find the zeros of...
.
• May 18th 2010, 12:55 PM
bigwave
since this is already factored out
Quote:

Originally Posted by eichyess
f(x)=x^2(x+3)(x^2-1)?

presume you mean find the values of x so that

$x^2(x+3)(x^2-1) = 0$

since this is already factored out. then setting any one of the factors to zero will work so..

if $x^2 = 0$ then $x = 0$
if $x+3=0$ then $x=-3$
if $x^2-1 = 0$ then $x= 1$or $x= -1$

http://www4a.wolframalpha.com/Calcul...51&w=299&h=124