do you mean
2^(3-x) = 5^(2x+1) ??????
Solve 2^3-x = 5^2x+1
Give an exact solution.
2 answers
if so then
(3x-1) ln 2 = (2x+1) ln 5
3 x ln 2 - 2 x ln 5 = ln 5 + ln 2
x (ln 8 - ln 25) = ln 10
x ln (8/25) = ln 10
x = ln 10 / ln (8/25)
(3x-1) ln 2 = (2x+1) ln 5
3 x ln 2 - 2 x ln 5 = ln 5 + ln 2
x (ln 8 - ln 25) = ln 10
x ln (8/25) = ln 10
x = ln 10 / ln (8/25)