Matematika

Pertanyaan

Tolong cari x dan y :D

x^2*y = 9
x/y^2 = 1/3

^ = berarti pangkat
* = berarti kali

1 Jawaban

  • x^2 . y = 9
    y = 9/(x^2)

    x/(y^2) = 1/3
    3x = y^2
    3x = (9/x^2)^2
    3x = 81/(x^4)
    3x^5 = 81
    x^5 = 27
    x^5 = 3^3
    x = 3^(3/5)

    y = 9/x^2
    = 9/(3^(3/5)^2)
    = 3^2 / (3^(6/5)
    = 3^(2 - 6/5)
    = 3^(4/5)

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