Question

for what vaule of x does 4^x =(1/8)^x-5.
-15
-3
3
15​

Answer 1

Answer:

3

Step-by-step explanation:

$4^x=(1/8)^{x-5} \\\\\\(2^2)^x=(2^{-3})^{x-5} \\\\\\2^{2x}=2^{-3x+15} \\\\\\2x=-3x+15 \\\\\\5x=15 \\\\\\x=3$

Hope this helps!