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f(x) = xlog(x+6)
3 = xlog(x+6)
x^3 = x + 6
x^3 - x - 6 = 0
(x - 2)(x^2 + 2x + 3) = 0
karena x^2 + 2x + 3 tidak memiliki akar real, maka ambil x = 2
jadi, titik potongnya adalah (2, 3)