Matematika

Pertanyaan

7 4
____ +____
m+n m-n

1 Jawaban

  • 7/m+n + 4/m-n


    = 7(m-n) + 4(m+n)
    -------------------------
    (m+n) (m-n)


    = 7m - 7n + 4m + 4n
    ----------------------------
    (m+n) (m-n)


    = 11m - 3n
    ------------------------------
    m^2 - mn + mn - n^2


    = 11m - 3n
    ------------------------------
    m^2 - n^2

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