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7th Grade Math ~Multiplying Polynomials

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1. (2x)(10x) (1point)
20x
12x
20x^2**
5x

2. -3m(m+8) (1point)
-3m^2+24
-3m^2-24m**
-24m^2
-4m+5

3. 4d(2d-9) (1point)
8d-36d
-d
-28d^2**
8d^2-36d

4. 5b(6b-10)
11b-10
5b^2+6b-10
-b-10
30b^2-50b**

Are these right

  • 7th Grade Math ~Multiplying Polynomials -

    Reiny, Ms.Sue, Steve could you help plz?

  • 7th Grade Math ~Multiplying Polynomials -

    1, 2, 4 are right. 3 is wrong.

  • 7th Grade Math ~Multiplying Polynomials -

    Is it D Ms. Sue?

  • 7th Grade Math ~Multiplying Polynomials -

    For #3 I think it's D is that correct.. yes, no,.. maybe so?

  • 7th Grade Math ~Multiplying Polynomials -

    Yes. D is correct.

  • 7th Grade Math ~Multiplying Polynomials -

    Oh ok I kinda posted it again cause I didn't realize you answered it (my bad) so just ignore my next post that you see)

  • 7th Grade Math ~Multiplying Polynomials -

    Thx Ms.Sue! ^.^

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