2^log3(x^2) * 5^log3(x)=400
2^2log3(x) * 5^log3(x)=400
4^log3(x) * 5^log3(x)=400
(4*5)^log3(x)=20^2
log3(x)=2
x=9
2^log3(x^2) * 5^log3(x)=400
2^2log3(x) * 5^log3(x)=400
4^log3(x) * 5^log3(x)=400
(4*5)^log3(x)=20^2
log3(x)=2
x=9