Question: Factoring real numbers

Hi, Everybody:

 

It is possible to fin this result with Maple:

Factor[18*R*r - 3*s^2 + 9*r^2] - >  3*(3*r^2 + 6*r*R - s^2)

 

i.e. factoring at least integers terms?

 

Thanks in advance

C.L. 

 

 

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