Final answer:
To factor the expression 3x^2y^2 - 6x^2 - 12y^2 - 24 completely, you can group the terms and factor out common terms from each grouping.
Step-by-step explanation:
To factor the expression 3x^2y^2 - 6x^2 - 12y^2 - 24 completely, we can first group the terms:
(3x^2y^2 - 6x^2) - (12y^2 + 24)
Now, we can factor out common terms from each grouping:
3x^2(y^2 - 2) - 12(y^2 + 2)
This simplifies to:
(3x^2 - 12)(y^2 - 2)
So, the completely factored expression is (3x^2 - 12)(y^2 - 2).