Question

3*log 8(^2x + 7*log 8(^x) + 2=0

Answer 1

a=log(8)x, 3a²+7a+2=0 , D=25
a1=-1.log(8)x=-1, x=1/8
a2=-6 , log(8)x=-6 , x=8^-6=1/8^6