Log4 (4x+2) = 2

log1/3 (x^2=8x) = - 2

4^x<1/4

log2 (8-4x) lgx=lg18 - lg3 + lg5 - lg15

Log4 (4x+2) = 2

4x+2=4²

4x=16-2

4x=14

x=14/4=7/2=3.5

log1/3 (x^2-8x) = - 2

x ²-8x = (1/3) ^-2

x ²-8x=9

x ²-8x-9=0

D=16+9=25

x (1) = 4+5=9

x (2) = 4-5=-1

4^x<1/4

4^x<4^ - 1

x<-1

lgx=lg18 - lg3 + lg5 - lg15

lgx=lg (18+5) / 3+15

x=23/18