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Mathematics 7 Online
OpenStudy (anonymous):

-8m^2 n-7m^6 n^4 complete factored form of the polynomial?

OpenStudy (jhannybean):

\[\large -8\color{green}{m^2}\color{blue}{n}-7\color{green}{m^6}\color{blue}{n^4}\]Can you tellmewhat the LCMs will be of these two highlighted portions?

OpenStudy (anonymous):

n

OpenStudy (anonymous):

and n^4

OpenStudy (jhannybean):

goooood :D and what else?

OpenStudy (anonymous):

idk umm m^6

OpenStudy (jhannybean):

Ok, lets try this.. Between \(n\) and \(n^6\) which one is smaller? Between \(m^2\) and \(m^6\) which one is smaller?

OpenStudy (anonymous):

n is smaller and m^2 is smaller

OpenStudy (jhannybean):

great! :D This is what we cal our "LCM" or Lowest common multiple.

OpenStudy (jhannybean):

What we can do, since these two terms, \(-8m^2n\) and \(-7m^6n^4\) share a -ve, an m and an n in common, we can pull these out as general factors.

OpenStudy (jhannybean):

Like so: \(\large -m^2n(8+7m^?n^?)\)

OpenStudy (jhannybean):

now since we pulled out our LCMS... we have to fill in the powers for the question marks.

OpenStudy (anonymous):

^4 and n^3

OpenStudy (jhannybean):

You got it :D \[\large -m^2n(8+7m^4n^3)\]

OpenStudy (jhannybean):

good job :P

OpenStudy (anonymous):

thanks

OpenStudy (jhannybean):

no problemo

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