log(a) + log(b) = log(ab)
I will get you started on the 3rd one; you should then be able to solve them all.
(x+1)(x-1)3 = 1025
The right hand side is so large that only the term in x4 is significant i.e.
x4=1025
4 log x = 25
Error: x=6,25
log x = 6.25 and x = 106.25
Roman B.
The first one would be a bit difficult to solve without using a calculator. For the last one you will need to use the change of base formula to get bases the same
Report
11/28/21
Mark M.
If 4 log x = 25, then log x = 6.25. 10^6.25 = x11/27/21