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Klaim

N. Rahayu

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

Jawaban terverifikasi

Pembahasan

Pertama - tama harus diingat bahwa bilangan yang dilogaritmakan harus positif berarti

x minus 2 greater than 0 rightwards double arrow x greater than 2 d a n x plus 2 greater than 0 rightwards double arrow x greater than negative 2

$log presubscript space presuperscript 2 left parenthesis x plus 2 right parenthesis minus log presubscript space presuperscript 2 open parentheses x minus 2 close parentheses equals 3 log presubscript space presuperscript 2 open parentheses fraction numerator x plus 2 over denominator x minus 2 end fraction close parentheses equals 3. log presubscript space presuperscript 2 2 log presubscript space presuperscript 2 open parentheses fraction numerator x plus 2 over denominator x minus 2 end fraction close parentheses equals log presubscript space presuperscript 2 2 cubed up diagonal strike log presubscript space presuperscript 2 end strike open parentheses fraction numerator x plus 2 over denominator x minus 2 end fraction close parentheses equals up diagonal strike log presubscript space presuperscript 2 end strike 8 fraction numerator x plus 2 over denominator x minus 2 end fraction equals 8 x plus 2 equals 8 x minus 16 x minus 8 x equals negative 2 minus 16 minus 7 x equals negative 18 x equals 18 over 7$