Teacher2Teacher 
Q&A #849 
View entire discussion [<< prev]
From: Derek <dpope820@hotmail.com> To: Teacher2Teacher Public Discussion Date: 2009091019:53:56 Subject: Re: Factoring the sum and difference of two cubes A great way to motivate this is to use synthetic division. For example: x^38=0 must have a zero of 2. When we synthetically divide by 2, we get 1 2 4, so x^38=(x2)(x^2+x+4). Doing a couple more examples should make the pattern clear. It can also be generalized by synthetically dividing x^3a^3 by a (one of its zeros).
Post a reply to this message

[Privacy Policy] [Terms of Use]
Math Forum Home 
The Math Library 
Quick Reference 
Math Forum Search