81³=3^a, nilai a adalah

81³=3^a
(3⁴)³ = 3^a
3^12 = 3^a

a = 12

Materi pangkat
[tex]81^3 = 3^a[/tex]
[tex](3^4)^3 = 3^a[/tex]
[tex]3^{12} = 3^a[/tex]
[tex]a = 12[/tex]