Math Fractions & Equations : How to Factor Polynomials by Grouping
In math, factoring by grouping means that the greatest common factor needs to be found. Factor four different terms through grouping with help from a math author and teacher in this free video on math lessons.
Expert: Brian Leaf
Contact: www.brianleaf.com
Bio: Brian Leaf, MA, is the author of McGraw-Hill’s “Top 50 Skills for SAT/ACT Success” series.
Filmmaker: David Pakman
Duration : 0:2:30
[youtube xvubtLJBLvA]
Tags: equations, fractions, lessons, math, mathematics, polynomials, skills, teaching, tips
August 29th, 2009 at 10:09 pm
Thank you so much, …
Thank you so much, ya helped alot !!
August 29th, 2009 at 10:09 pm
I learned this all …
I learned this all long ago, and forgot most of it. great refresher!
August 29th, 2009 at 10:09 pm
that was a lot …
that was a lot easier than i thought. thanks.
August 29th, 2009 at 10:09 pm
thank you for …
thank you for refreshing my mind
August 29th, 2009 at 10:09 pm
do you do the same …
do you do the same thing with 3 terms instead of 4?
August 29th, 2009 at 10:09 pm
thanks a bunch
thanks a bunch
August 29th, 2009 at 10:09 pm
he sounds a little …
he sounds a little like kermit the frog =)
August 29th, 2009 at 10:09 pm
i have the algebra …
i have the algebra 1 exam tommow
THANKS A BUNCHHH!
August 29th, 2009 at 10:09 pm
thanks!!!!!! ur …
thanks!!!!!! ur more helpful dan my math teacher
August 29th, 2009 at 10:09 pm
F*@ K I did my work …
F*@ K I did my work wrong thanks for telling me how 2 do it properly my teacher wouldnt help after i missed a week of school i had 2 find people like u and again thanks
August 29th, 2009 at 10:09 pm
thanks man i …
thanks man i understand now!
August 29th, 2009 at 10:09 pm
If the whole …
If the whole equation has a GCF it is easier to factor. In yours, you said 6X^3 - 4X^2 - 6X +4. Well using the method of grouping, 6X^3 - 4X^2 would become 2X^2 (3X-2) and -6X +4 would become -2 ( 3X -2) = 2X^2(3X-2) -2(3X-2) From here you remove (3X-2)leaving 2X^2-2. Thus your final answer is (3X-2)(2X^2-2)
August 29th, 2009 at 10:09 pm
There is a ” …
There is a “Greatest Common Factor” in your formula. The Greatest Common Factor is the highest degree of the lowest common factor. In this case, your lowest common Factor, aside from 1, is X. Now, the highest degree of X which can be found through out the equation is X^2. Making X^2 the Greatest Common Factor. Leaving you with X^2 ( 3X + 5 - 4X^2 ) Now if you want it to be less confusing, write it with the highest degree on one side going down as… X^2 ( -4X^2 + 3X + 5 ) known as a “Trinomial”.
August 29th, 2009 at 10:09 pm
how would u solve …
how would u solve if there not GCF such as 3x^3+5x^2-4x^-4
August 29th, 2009 at 10:09 pm
Thank you very much
Thank you very much
August 29th, 2009 at 10:09 pm
you are a god. …
you are a god. Thank you
August 29th, 2009 at 10:09 pm
You take the GCF …
You take the GCF out: 2(3x^3 - 2x^2 - 3x + 2) and just solve the inside like the guy in the video did as if it wasn’t in parentheses.
August 29th, 2009 at 10:09 pm
ok a little too …
ok a little too early for this.
August 29th, 2009 at 10:09 pm
How would you do a …
How would you do a problem like this if the whole thing has a GCF?
For example:
6x^3 - 4x^2 - 6x + 4
August 29th, 2009 at 10:09 pm
You’re very welcome …
You’re very welcome. I’m glad that it helped.
August 29th, 2009 at 10:09 pm
this was so helpful …
this was so helpful better than the 1 my teacher showed us.. thank you so much…
August 29th, 2009 at 10:09 pm
wow thanks man u …
wow thanks man u made it seem way easier then my dumb teacher
August 29th, 2009 at 10:09 pm
thank you so much!
thank you so much!
August 29th, 2009 at 10:09 pm
wthell i dun get it …
wthell i dun get it. efffffff ma life
August 29th, 2009 at 10:09 pm
I love you, man!
I love you, man!