Could someone give me an example of how to factor a trinomial?

Question

mathteacher1729 · Answer

You mean like...

(x+1)(x-1) = x^2 - 1
or
(x+1)(x+3) = x^2 +4x +3

only in reverse?

anonymous · Answer

I think so, I just know you have to start with a trinomial such as 5x+3y+ 2x ?maybe

phi · Answer

this might help you http://www.khanacademy.org/math/algebra/polynomials/v/factoring-quadratic-expressions

mathteacher1729 · Answer

So using the example you gave

5x+3y+ 2x

you can "collect like terms" 

5x + 2x  and 3y 

5x + 2x = 7x 

and 3y sits by itself so the simplified result is

7x + 3y

7 and 3 don't have any common factors, so we're done.

mathteacher1729 · Answer

And better than khan is this http://www.mathtv.com/videos_by_topic Click "algebra" then "factoring" and you will see lots of VERY GOOD (better than Khan) videos. :)

anonymous · Answer

thanks for all your help :) @mathteacher1729