9th grade

(5c-9)(5c+1)

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asked by Stephanie
  1. Read previous comments to your namesakes.

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    posted by drwls
  2. 25c^2 - 40c - 9

    you just FOIL it! (first, outside, inside, last) multiply it over in an arc shape....the first number of the first () times the first number of the second (), and so on and so forth!

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    posted by Alexa

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