algebra 2

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How would 3x^2-27y^2 be factored completely?

  • algebra 2 -

    isnt it the difference of two squares?

    3(x^2-9y^2)=3(x-3y)*(x+3y)

  • algebra 2 -

    Yes but isnt the difference of two squares just one technique to factor polynomials?

  • algebra 2 -

    Of course. If one technique works to factor a polynomial, it is factored.

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