Cool math Algebra Help Lessons: Factoring Polynomials

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Coolmath Algebra
Factoring Lesson 8 - A Final Overview (page 3 of 4)
---- This algebra lesson gives a final overview of factoring polynomials.

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RULE # 4:

If it has three terms and the coefficient on the squared guy is not a 1...

Make your list and start hammering!

Example:

First: 1 * 6 and 2 * 3 , Last: 1 * 7 and 7 * 1

We need a -19...

4) 2 * 3 and 7 * 1 gives 21 and 2 ... -21 + 2 = -19

First: 2 * 3 and Last: 7 * 1 gives ( 2x - 7 ) ( 3x + 1 ) ... the inner terms give -21x and the outer terms give 2x

So,

Example:

RULE # 1!!

= 3 ( x^2 - 3x - 4 ) ... now, it's just a NIKE factor... = 3 ( x + 1 ) ( x - 4 )

Continued on the next page

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