Posted by **Ashley** on Sunday, September 6, 2009 at 8:51pm.

Hello, I have tried solving this using the rational roots theorem and none of the roots seem to be working. I'm trying to figure out where I went wrong.

3x^3 -2x^2 - 7x - 4 = 0

- Pre-Calculus -
**Reiny**, Sunday, September 6, 2009 at 11:30pm
you are right, it does not factor over the rational numbers.

here is a webpage that solves cubics for you, just enter the constants

it gave me 1 irrational root and 2 complex roots.

- Pre-Calculus -
**Ashley**, Monday, September 7, 2009 at 12:07am
Thanks for the help. However, I don't see the webpage you were speaking of.

- Pre-Calculus -
**Reiny**, Monday, September 7, 2009 at 12:10am
how silly of me

http://www.1728.com/cubic.htm

- Pre-Calculus -
**Ashley**, Monday, September 7, 2009 at 12:13am
Thanks!

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