4) log(3) log(4) (4^1/9)=log(3) (1/9)=log(3) 3^(-2)=-2log(3) 3=-2 D
5) 2+log(3) 4=log(3) 36 - log(15) (5x)
log(15) (5x)=log(3) (4 * 3^2) -2-log(3) 4
log(5) (5x) / log(5) 15=log(3)4 + log(3) 3^2 -2-log(3) 4
log(5) 5 +log(5) x=(log(5) 5+log(5) 3) *(2log(3) 3 - 2)
log(5)x=(1+log(5) 3) *(2-2)
log(5) x=0
x=5^0
x=1