'5 log 4z'3 -'5 log z = 2, tentukan nilai z
Matematika
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Pertanyaan
'5 log 4z'3 -'5 log z = 2, tentukan nilai z
1 Jawaban
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1. Jawaban khominghoo
'5 log 4z'3 -'5 log z = 2
'5 log 4z'3 -'5 log z = '5 log 5²
'5log 4z³/z = '5 log 25
4z³/z = 25
4z² = 25
z² = 25/4
z = √(25/4)
z = 5/2