3(log x)² - log (x^5) = (log x)² -3
Misal :
'log x = a
Berarti :
3a² - 5a = a² -3
3a² -a² -5a + 3 = 0
2a² -5a + 3 = 0
(2a + 1) (a-3) = 0
a = -1/2 (gak memenuhi)
a = 3
log x = 3
log x = log 1000
x = 1000
Jadi hp
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3(log x)² - log (x^5) = (log x)² -3
Misal :
'log x = a
Berarti :
3a² - 5a = a² -3
3a² -a² -5a + 3 = 0
2a² -5a + 3 = 0
(2a + 1) (a-3) = 0
a = -1/2 (gak memenuhi)
a = 3
log x = 3
log x = log 1000
x = 1000
Jadi hp
x = 1000