SOLUTION: Find LCM of m^2-4m-5 and m^2+8m+7. Thanks

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Question 43863: Find LCM of m^2-4m-5 and m^2+8m+7.
Thanks
Answer by gsmani_iyer(178) About Me  (Show Source):
You can put this solution on YOUR website!

First take out the factors of both the expressions. Then take common factor as one factor and other factors once to arrive at the Least Common Multiple. Here,

m%5E2-4m-5 = (m-5)(m+1)
m%5E2%2B8m%2B7 = (m+7)(m+1)
In the factors of both the above expressions, we find (m+1) as one of the factors. So we will form an expression taking (m+1) as a factor and uncommon factors i.e.(m-5) and (m+7) as other factors. That will be the LCM. of those two expressions.

So the LCM = (m+1)(m-5)(m+7). Answer.
gsm