Question

Using complete sentences, explain how to find the zeros of the function f(x) = 2x3 – 9x + 3.

Answer 1

There are several ways to do this:
1) Graph the function noting the points where the function crosses the x axis
2) Use the quadratic formula
3) Set the expression equal to 0 and factor it out...then solve for the x values.

Answer 2

I can't figure out how to factor it since it is cubed not squared. And the problem wants me to explain using words, not actual math.

Answer 3

Ahh...scratch the quadratic formula. I missed the cubed part. But there is a cubic formula as well: http://www.math.vanderbilt.edu/~schectex/courses/cubic/

Answer 4

:O im never passing algebra.