1,=(3^log3,5)^2=25 2,=3^log3,36=36 3,=3^log5*9=45 4,=7^log7,7/5=7/5
5,=4^(log4,9-log4,5)=9/5 6,=3^(1/2*1/2log3,4)=根2 7,=3^4*0.5log3,5+2=25+2=27