Saturday

April 18, 2015

April 18, 2015

Posted by **Bella** on Friday, August 24, 2012 at 9:58pm.

f(x)=x^3+10x^2-13x-22

find real zeros of f?

use real zeros to factor f?

- college algebra -
**drwls**, Friday, August 24, 2012 at 10:04pmI suggest you start by using the rational roots theorem to find at least one root. You will learn more by making the effort yourself.

- college algebra -
**Bella**, Friday, August 24, 2012 at 10:15pmIf I understood it I would not have to ask for help! I got it wrong in the 1st place and wanted to see the right answer. Thank you!!

- college algebra -
**drwls**, Friday, August 24, 2012 at 10:20pmThe theorem says that if there is a rational root, it is (in this case) a factor of 22, which are one or more ofthese:

+/1, +/-2, +/-11 or +/-22.

See if any of those work.

- college algebra -
**Bella**, Friday, August 24, 2012 at 10:34pmthank you!

- college algebra -
**drwls**, Friday, August 24, 2012 at 10:44pmx = 2 is a solution and (x-2) is a factor.

The other factor is

(x^3+10x^2-13x-22)/(x-2)

Polynomial long division will reduce that to a quadratic.

- college algebra -
**Anonymous**, Monday, August 18, 2014 at 1:27pm6x^3+25x^2-24x+5

**Answer this Question**

**Related Questions**

College algebra - Use the rational zeros theorem to find all the real zeros of ...

college algebra - 1. solve the following logarithmic equation log_8(x+8)+log_8(x...

rational zeros theorem - Use the rational zeros theorem to find all the real ...

math - usethe rational zero theorem to find all real zeros of the polynomisl ...

college algebra - use the rational zeros theorem to find all the real zeros of ...

College Algebra - Use the rational zeros theorem to find all the real zeros of ...

pre calculus - use the rational zeros theorem to find all the real zeros of the ...

calculus - use rational zeros theorem to find all the real zeros of the ...

college algebra - use the rational zeros theorem to find all the real zeros of ...

calculus - use the rational zeros theorem to find all the real zeros of the ...