Please help me find the least common multiple of these:



1) a^2-2ab+b^2



2) a^2-b^2



3) 3a+3b



Factor each :

1) a^2-2ab+b^2 = (a+b)^2



2) a^2-b^2 = (a+b)(a-b)



3) 3a+3b = 3(a+b)





The LCM must contain each of these factors to their highest power, as follows:

LCM = 3(a-b)(a+b)^2







 

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