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HelloKitty17

  • one year ago

Algebra 1 help please will fan and medal

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  1. HelloKitty17
    • one year ago
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    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
    • one year ago
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    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
    • one year ago
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    Thanks @satellite73

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

  6. anonymous
    • one year ago
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    so it is either C or D they want you to multiply the two polynomials to see what you get

  7. OregonDuck
    • one year ago
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    12x^4 + 6x^3 - 19x^2 + 11x - 4

  8. OregonDuck
    • one year ago
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    So it would be choice C

  9. anonymous
    • one year ago
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    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
    • one year ago
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    XD lol

  11. anonymous
    • one year ago
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    http://www.wolframalpha.com/input/?i=+%284x2+%E2%88%92+2x+%2B+1%29%283x2+%2B+3x+%E2%88%92+4%29+ @OregonDuck has it

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