SOLUTION: Factor -7m3n -28mn3

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Question 300302: Factor -7m3n -28mn3
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
-7m^3n -28mn^3
-7mn(m^2 - 4n^2)
-7mn(m^2 - (2n)^2)
Notice, we now have a "difference of squares":
(-7mn)(m-2n)(m+2n)