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2. log²a + log a=6,tentukan nilai a!
3.hitunglah nilai 2 log 0,25
jawab
1.4
2.dimisalkan log a=x
(x)² + (x) - 6=0
(x+3) (x-2) =0
x=-3 atau x=2
log a= -3
a=
3.diubah menjadi 2 log = 2 log = 2 log = -2 . ²log 2 = -2.1 =-2