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is 30mn and 30nm like terms

(6mn+5n)(6m-5n)
=36m2-30mn+30nm-25n
=36m2-25n
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1 Answer

Yes they are.  Multiplication is commutative.
 
AB=BA
 
eg (4)(10)=(10)(4)=40
 
additionally, ABBA was a great soft rock group ;-)