1:
a: \(\Leftrightarrow3^x\left(3^2+1\right)=10\)
=>3^x=1
=>x=0
b: \(\Leftrightarrow x+3^3=49\)
=>x=49-27=22
c: \(\Leftrightarrow3x-6=27\)
=>3x=33
=>x=11
2:
a: \(\Leftrightarrow4^{2x}\cdot5=80\)
=>4^2x=16
=>2x=2
=>x=1
b: \(\Leftrightarrow2x-17=125\)
=>2x=142
=>x=71
c: \(\Leftrightarrow5x+20=25\)
=>5x=5
=>x=1