PLEASE HELP (:
Which statement justifies that 3x2 - 2x - 4 multiplied by 2x2 + x - 3 obeys the closure property of multiplication?

Question

PLEASE HELP (:
Which statement justifies that 3x2 - 2x - 4 multiplied by 2x2 + x - 3 obeys the closure property of multiplication?

anonymous · Answer

The result 6x4 - 2x2 + 12 has a degree of 4.
 The result 6x4 - 2x2 + 12 is a trinomial.
 The result 6x4 - x3 - 19x2 + 2x + 12 is a polynomial.
 The result 6x4 - x3 - 19x2 + 2x + 12 has a degree of 4.

anonymous · Answer

@Pinkiexoxo

anonymous · Answer

Ill help!

anonymous · Answer

WHICH closure property of multiplication?

Is there such a property for DEGREE?  No.
Is there such a property for TRINOMIAL?  No.
Is there such a property for POLYNOMIAL?  Yes.

Well then, there are not to many possible correct answers, are there?

anonymous · Answer

I have to be quick though, storms really bad outside.

anonymous · Answer

The result 6x4 - 5x3 - 18x2 + 8x + 15 is a polynomial.
So I would say C

anonymous · Answer

Thank you so much!