log (x²-6) + log 2 = 1 + log x tolong dong
Matematika
jupri20
Pertanyaan
log (x²-6) + log 2 = 1 + log x tolong dong
1 Jawaban
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1. Jawaban Seraphina1
Log(x²-6)+ log 2 = 1 + log x
Log (x²-6)+ log 2 = log 10 + log x
Log (x²-6)*2 = log 10x
2x²-12 = 10x
__________:2
X²-6=5x
X²-5x-6=0
(X+1)(x-6)=0
X=-1 atau X=6