7log (x2-4x-4) = 3log (x2-4x-4)
Matematika
GTR
Pertanyaan
7log (x2-4x-4) = 3log (x2-4x-4)
1 Jawaban
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1. Jawaban fitrasalam
x²-4x-4=1
x²-4x-4-1=0
x²-4x-5=0
(x+1)(x-5)=0
x= -1 x= 5
HP={-1,5}