Question

8^x=1/128

Answer 1

solve the equation analytically.

Answer 2

\[xln8=\ln(1)-\ln(128)\]

Answer 3

that's right, and divide by ln(8)

Answer 4

is it \[x= \frac{ \ln 127 }{ \ln 8 }\]

Answer 5

\[(2^{3})^{x}=2^{-7}\] For some reason that looks like that might help. But don't see how lol.

Answer 6

@the answer is supposed to be x=-7/3

Answer 7

Now I see how it helps.

Answer 8

@radar does this mean the single ln(1) doesnt matter then
?

Answer 9

Isn't the ln1 a zero?

Answer 10

lol.. i am barely learning it i thought i would have to subtract ln(1)-ln(128) but your equation was much more helpful thanks

Answer 11

I was attempting to show a solution by getting around logs (because I am easily confused with them) lol

Answer 12

ha thanks it worked