Find the zeros of the function.

Question

iwanttogotostanford · Answer

@inkyvoyd

mathmale · Answer

Your job is to determine the 3 x values that make this function = 0.  Therefore, first, set this function equal to zero.  

Note how x is common to all three non-zero terms.  Factor it out.  What's left is a quadratic equation.  There are half a dozen or more ways of solving quadratics.  Which is / are your favorite(s)?

sammixboo · Answer

You want to make the function equal to 0, and then solve.

$\tt 0 = 3x^3 - 21x^2 + 36x$

We can pretty much solve this with two main steps. First step is factoring. Do you see what the greatest common factor is between $\tt 3x^3$, $\tt 21x^2$, and $\tt 36x$?

mathmale · Answer

@iwanttogotostanford:  Another person and I have (in our own ways) suggested what you need to do first.  Would you please do that now.

sammixboo · Answer

That person has gone offline ):

mathmale · Answer

Unfortunately.  I'd suggest waiting until she returns.

mathmale · Answer

thank you all for your input.