Solve for x:
1. 3^2x+3^x+1-4=0
2. log3(x=12)+log3(x+4)=2
3. lnx+ln(x+2)=4
4. 3*4^x+4*2^x+8=0
1. 3^2x+3^x+1-4=0
2. log3(x=12)+log3(x+4)=2
3. lnx+ln(x+2)=4
4. 3*4^x+4*2^x+8=0
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