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How to factoriesm^2+7mn-15n^2Please help

Answer»

Answer:

The QUESTION is wrong I think

It must be m^2+8mn+15n^2

Step-by-step EXPLANATION:

Because we can't factorise with 7mn and 15n^2

The answer of m^2+8mn+15n^2

m^2+5mn+3mn+15n^2

m (m+5n)+3n (m+5n)

(m+3n) (m+5n)

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