For math. i need with this. 15 points
which statement shows how the product of (x + 5)2 demonstrates the closure property of multiplication?
x^2 + 25 is a polynomial
x^2 + 25 may or may not be a polynomial
x^2 + 10x + 25 is a polynomial
x^2 + 10x + 25 may or may not be a polynomial