SOLUTION: find the LCM of (9+4r)(81-16r^2) and (9-4r)

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Question 468465: find the LCM of (9+4r)(81-16r^2) and (9-4r)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
find the LCM of (9+4r)(81-16r^2) and (9-4r)
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Since (81-16r^2) = (9-4r)(9+4r)
the LCM is 81-16r^2
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Cheers,
Stan H.