Question

Help! Find the zeros of f(x)=x^3-7x^2-30x.

Answer 1

to find the zeros you need to factor out and equate f(x) to 0

\[x^3 - 7x^2 - 30x = 0\]
\[x(x^2 - 7x - 30) = 0\]
\[x(x-10)(x+3) = 0\]
now solve for x
\[x =0; \; x = 10 ; \; x= -3\]
does that help?