2(log3x)^2+log3x-1=0
(2log3x-1)(log3x+1)=0
2log3x-1=0
log3x=1/2
x=3^(1/2)
或log3x+1=0
log3x=-1
x=3^(-1)=1/3
即解是X=3^(1/2)和1/3.