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Verified answer
²log x + ²log (x + 2) = 3²log x(x + 2) = 3
x(x + 2) = 2³
x² + 2x - 8 = 0
(x + 4)(x - 2) = 0
x = -4 atau x = 2
Syarat : Numerus positif
x ≥ 0 ... (i)
x + 2 ≥ 0
x ≥ -2 ... (ii)
Sehingga HP : {2}