## HelloKitty17 one year ago Algebra 1 help please will fan and medal

1. HelloKitty17

Jim has a piece of cardboard with length (4x2 − 2x + 1) inches and width (3x2 + 3x − 4) inches. Which statement best explains why the area of the cardboard demonstrates the closure property? A. The length multiplied by the width is equal to the width multiplied by the length. B. The length multiplied by the width has the same degree as the width multiplied by the length. c. It is equal to (12x4 + 6x3 − 19x2 + 11x − 4) square inches, which is also a polynomial like the length and width. D. It is equal to (12x4 + 12x3 − 16x2 − 8x − 4) square inches, which is also a polynomial like the length and width.

2. anonymous

A. The length multiplied by the width is equal to the width multiplied by the length. is an example of the "commutative law" not "closure"

3. HelloKitty17

Thanks @satellite73

4. anonymous

B. The length multiplied by the width has the same degree as the width multiplied by the length. commutative property again not closure

5. OregonDuck

You'll need to distribute (4x2 − 2x + 1)*(3x2 + 3x − 4). Do you know how to ?

6. anonymous

so it is either C or D they want you to multiply the two polynomials to see what you get

7. OregonDuck

12x^4 + 6x^3 - 19x^2 + 11x - 4

8. OregonDuck

So it would be choice C

9. anonymous

to do that multiplication, you need to do $$3\times 3=9$$ products, then combine like terms too much work for me, i would cheat

10. OregonDuck

XD lol

11. anonymous