Log in

View Full Version : Can't solve polynomail


Gernald
Oct 28, 2007, 12:38 PM
I'm trying to solve the equation 2x^3+60x is less then or equal to 5x^2+37x
I got it down to 2x^3-5x^2+23x=0 but I don't know what to do next. I think I'm supposed to factor but I can't figure that out either.
I'm so lost. :eek:

s_cianci
Oct 28, 2007, 02:12 PM
Factor, then do a sign analysis. The zeros of your factors will determine the intervals on which to do your sign analysis.

Gernald
Oct 28, 2007, 03:46 PM
Thanks but, Do what??

galactus
Oct 28, 2007, 05:25 PM
You can rewrite it as:

2x^{3}-5x^{2}+23x\leq{0}

x\leq{0}