Math Help!

Multiply the following polynomials

1. 2a(a^2+4^a)

A. 2a^2+6a^2
B. 2a^3+8a^2
C. 2a+6a
D. 2a^3+6a^2


2. (3y)(3y-2)

A. 9y^2-6
B. 9y^2+5y
C. 9y^2+1
D. 9y^2-6y


Not sure? I'm not asking anyone to give me the answer but I don't know how to do this.

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asked by Amber
  1. I noticed in your first question you have 4^a.
    None of the choices would match that.
    It had to be 2a(a^2 + 4a) to get a correct answer from your choices.

    You are using the distributive property which is illustrated by

    a(b + c)
    = ab + ac

    you multiply the stuff sitting in front of the bracket by each term within the bracket

    Let me know which are your choices.

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    posted by Reiny
  2. For number 1 I'll go with b because it has to be one of them..on 2 I would go with D?

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    posted by Amber
  3. correct for both

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    posted by Reiny
  4. Thanks Reiny for your help :)

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    posted by Amber
  5. You are very welcome

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    posted by Reiny

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