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Question

Find the LCM of m2n2,3m23mn

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Solution

We know that LCM is the least common multiple.

Factorise m2n2 as follows:

m2n2=(m+n)(mn) (using identity a2b2=(a+b)(ab))

Now, factorise 3m23mn as follows:

3m23mn=3m(mn)

Since the least common multiple between the polynomials m2n2and 3m23mn is 3m(m+n)(mn).

Hence, the LCM is 3m(m+n)(mn).

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