Choose the correct simplification and demonstration of the closure property given: (2x3 + x2 − 4x) − (9x3 − 3x2).

−7x3 + 4x2 − 4x; may or may not be a polynomial
−7x3 + 4x2 − 4x; is a polynomial
11x3 − 2x2 − 4x; may or may not be a polynomial
11x3 − 2x2 − 4x; is a polynomial

Question

Choose the correct simplification and demonstration of the closure property given: (2x3 + x2 − 4x) − (9x3 − 3x2).

−7x3 + 4x2 − 4x; may or may not be a polynomial
 −7x3 + 4x2 − 4x; is a polynomial
 11x3 − 2x2 − 4x; may or may not be a polynomial
 11x3 − 2x2 − 4x; is a polynomial

Gucchi · Answer

am i right w B?

Joe348 · Answer

In my opinion, I feel like it could be A or B

Joe348 · Answer

The first part of it 
... is right but i'm not so sure with the second part

Ava1 · Answer

I think it might be A

Joe348 · Answer

I think you could be right @gucchi

Gucchi · Answer

thank you