1. 4 log 81 2. 8 log 27

1. 4log81 = [tex]2^{2}log3^{4}[/tex] = [tex]\frac{4}{2}[/tex] x 2log3 = 2 x 2log3

2. 8log27 = [tex]2^{3}log3^{3}[/tex] = [tex]\frac{3}{3}[/tex] x 2log3 = 2log3

1. 4 log 81 => x^4=81 => x=3
2. 8 log 27 = 2 log 3