Solve the following: Leave answers in exact form. No decimals!!! a. 8(5)x + 2 = 26 b.2=logx+15

Answer 1

a) 8(5)^x+2 = 26

8(5)^x = 24

5^x = 4

x ln(5) = ln(4)

x = ln(4)/ln(5) you can use log(x) here too and get the same answer

b) 2 = log(x) +15 assuming log(x) = log₁₀(x)

log(x) = -13

10^log(x)= 10^-13

x = 10^-13