Question 1174687
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Surely, it goes to wrong category.



May I ask you to omit this your mantra about a "category" : it really irritates when you repeat it every time . . . 



Thank you.


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<pre>
27x^4*y^3 - 12x^2*y^7 = factor common multipliers out = 


                      = 3x^2*y^3*(9x^2 - 4y^4) = 3x^2*y^3*(3x-2y^2)*(3x+2y^2).      <U>ANSWER</U>
</pre>

Solved.