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Math Help - Difference of squares

  1. #1
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    Difference of squares

    Use the difference of squares method to factorize 4819.
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  2. #2
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    Hello, meshel88!

    Use the difference of squares method to factor 4819.

    I'm not familiar with the "difference of squares method",
    . . but I solved it anyway . . .


    I saw that: . 4819 \;=\;4900 - 81 \;=\;70^2 - 9^2


    Therefore: . 4819 \;=\;(70-9)(70+9) \;=\;61\cdot79


    Is that the method?

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