Factoring Quadratics for Idiots

14 04 2008

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9 responses to “Factoring Quadratics for Idiots”

14 04 2008
Factoring harder Quadratics for idiots « Algebra simplified (23:58:00) :

[...] read the first tutorial on quadratics and don’t know cross factoring, read it here Factoring Quadratics for idiots. If you still dont get it, read it again, and remember… “Mathematics is a game played [...]

16 04 2008
The CEA Blog » Blog Archive » The 167th Carnival of Education! (02:52:10) :

[...] Factoring quadratics for idiots…but done in a nice way.  [...]

18 04 2008
jd2718 (00:17:07) :

12x^2 - 5x - 2 ?

18 04 2008
imagxz (00:20:34) :

(4x+1)(3x-2)

18 04 2008
jd2718 (00:55:28) :

but w/ “cross factoring”?

18 04 2008
imagxz (01:52:07) :

Cross factoring is just another way of factoring. The answer would be the same if you factored it normally. If you mean how i got there…
12x is broken down into 4×3 or 6×2 or 12×1.
-2 is broken into -2 and 1.
So if you try 4x\/1
3x/\-2
Cross multiply that and add them,
-8+3 = -5. which is your middle number
So. (4x+1)(3x-2)

22 04 2008
Principled Discovery » The Carnival of Homeschooling honors the homeschool bag lady (09:35:45) :

[...] long as we have the puzzle book out, do you remember how to factor quadratics? Algebra simplified is showing it the easy [...]

24 04 2008
Factoring harder Quadratics for idiots (19:09:54) :

[...] read the first tutorial on quadratics and don’t know cross factoring, read it here Factoring Quadratics for idiots. If you still dont get it, read it again, and remember… “Mathematics is a game played [...]

26 04 2008
Tip Diva | Carnival Of Tips - April 19, 2008 (23:03:32) :

[...] presents Factoring Quadratics for Idiots posted at Algebra simplified, saying, “An easy way to factor quadratic [...]

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