Question 177712
find the LCM 
15cd and 9c^2 
Procedure:
15cd has these factors: 3,5,c,d
9c^2 has these factors: 3^2,c^2
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The LCM must have each factor in its highest power:
Therefore LCM = 3^2*5*c^2*d = 9*5*c^2d = 45c^2d
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Cheers,
Stan H.
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choices:
135c^2d
45cd
45c^2d
3c