Planning and Preparing for College (Scholarships, Internships, Etc)

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Tuesday, January 15, 2013

Math Application Support (FACTORING & KHAH Academy)

Below are two excellent math applications that can be used for working on problems or exams such as the ACT.

Factor by Grouping : A Formula (click link to retrieve the information)

Foil Method to Multiply Binomials - with Video Tutorial on How to Multiply Binomials

How To Factor by Grouping using the AC Formula

To factor a polynomial you must reduce the polynomial expression to its factors.   We are going to use a method known as the 'ac' method to factor by grouping. Many people do not realize that there is actually a systematic way to factor by grouping. This is the closes thing to a 'formula' that you will find for factoring by grouping. It is always much easier to look at some example problems before reading generalized steps, but the steps go as follows:

Formula for Factoring By Grouping

Step 1) Determine the product of AC (the coefficients in a quadratic equation)
Step 2) Determine what factors of AC sum to B.
Step 3) "ungroup" the middle term to become the sum of the factors found in step 2
Step 4) group the pairs.
KHAN ACADEMY (click link to retrieve the information)

With a library of over 2,400 videos covering everything from arithmetic to physics, finance, and history and 125 practice exercises, we're on a mission to help you learn whatever you want, whenever you want, at your own pace.  Bill Gates was also amazed with the the KHAN Academy, view the video below for details: