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9th grade

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

  • 9th grade -

    Read previous comments to your namesakes.

  • 9th grade -

    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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