Question

solve log (x-1) + Log 4=2

Answer 1

You can rewrite sum of two logs as one log by multiplying the function

Answer 2

Ok, umm, so you would multiply the (x-1) and the 4?

Answer 3

(x-1)4=100
4x-4=100
x=(100+4)/4
x= 26

Answer 4

wow! How did u get 100?

Answer 5

\[\text{Log}[a]+\text{Log}[b]=\text{Log}[a*b]\]

Answer 6

U do not go (x-1)4= 4x-4? Where did the 100 come in?

Answer 7

Let me walk through you,
based on my post above
\[\text{Log}[(x-1)(4)]=2\]
\[\text{Log}[(4x-4)]=2\]
Now change that to exponential form,
\[\text{Log}_ba=c\space \text{ }\space \text{--}> b^c=a\]
10^2=4x-4
100=4x-4

Answer 8

i will look and see if i got it

Answer 9

ok, that part makes sense. so the next step is to...?

Answer 10

oh, i see it.

Answer 11

Thank you! God bless