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factor it. 81r^2-36rs+4s^2

  • math -

    you try, see above example that I did for you.

    you won't learn how to factor without trying

    post back where you are stuck

  • math -

    i have no idea how to do this...

  • math -

    81r^2 - 36rs + 4s^2

    this one is a little harder than the above one I did for you

    (9r - 2s)(9r - 2s) = (9r - 2s)^2
    this is factored form.

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