Question

Determine the zeros of f(x) = x^3 - 3x^2 - 16x + 48.

Answer 1

X=3 , 4 , -4

Answer 2

Thank you!

Answer 3

How did you get the answer, though?
I'm a bit confused and would like to know how work it out myself so I can do more problems like it.

Answer 4

Easiest and fastest way to do it is to graph it. If you got a calculator that supports graphs, then just input " x^3 - 3x^2 - 16x + 48 " as y1 and 0 as y2 and check where they hit eachother on the graph.

Or solve as a 3rd degree equation: http://itsme.home.xs4all.nl/projects/math/misc/solveEquations.html

Answer 5

Okie dokie, sounds good.