SOLUTION: Exponential and Logarithmic Equations: use mental math to sovle each equation. 1. 2^x=1/8 2. log(small4)2=x 3. 10^6x=1 4. solve 5^2x=125

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: Exponential and Logarithmic Equations: use mental math to sovle each equation. 1. 2^x=1/8 2. log(small4)2=x 3. 10^6x=1 4. solve 5^2x=125      Log On


   

Question 273141: Exponential and Logarithmic Equations:
use mental math to sovle each equation.
1.
2^x=1/8
2.
log(small4)2=x
3.
10^6x=1
4.
solve 5^2x=125
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
2^x=1/8
log[2](2^x)=log[2](1/8)
x=log[2](1/8)
x=-3
.
Ed