Explicație pas cu pas:
1)
a) 5^x=125=>x=log5(125)= 3
b) 4^x=1024=>x=log4(1024)= 5
c) 9^x=1/729=>x=log9(1/729)= -3
d)25^x=0,2
25=5²
0,2=2/10=1/5
=>5^2x=1/5=>2x=log5(1/5)=-1=>x=-1/2
e) 2^(x+3)=32
32=2⁵=>2^(x+3)=2⁵=>x+3=5=>x=2
f)8^x=16
8=2³=>2^3x=16=>3x=log2(16)=4=>x=4/3
