You are here:

Advanced Math/One factor of x^3+2x^2-11x-12...

Advertisement


Question
One factor of x^3+2x^2-11x-12 is (x-3). What are the remaining factors?

Answer
(x^3 + 2x^2 - 11x - 12)/(x - 3)

Using synthetic division

3'|'1'2'-11'|'-12
''|'''3''15'|''12
--------------------
''|'1'5'''4'|'''0

this gives you the equation of

x^2 + 5x + 4

which factors to

(x + 4)(x + 1)

so the answer is (x + 4)(x + 1)

Advanced Math

All Answers


Answers by Expert:


Ask Experts

Volunteer


Sherman D.

Expertise

I can answer questions dealing in mathematics of all kinds except for Physics and Calculus, but i can answer questions in Pre-Calculus and Chemistry. I can also answer questions in Recipes of all kinds. I can find games cheats/walkthroughs, but i can`t find a specific game online or offline. I can also do history and recipes for alcoholic beverages.

Experience

Mathematics, Recipes, History, and Games.

Education/Credentials
High School graduated. I graduated with honors, and i was in Beta Club for a year and a half.

Awards and Honors
Principle's list and A and B honor roll in high school only.

©2012 About.com, a part of The New York Times Company. All rights reserved.