Question

What value of n solves the equation? 2^n=1/8 (the 2^n means with a exponent of n)

Answer 1

match bases
if a^x=b^x where x=x then a=b

hmmm
1/8=8^-1=(2^3)^-1=2^-3
so
2^n=2^-3
n=-3