If #5^(-x) = 3#, what does #5^(3x)# equal?
2 Answers
Jan 14, 2017
Jan 15, 2017
Explanation:
Another approach:
Recall that
#5^(3x)=(5^-x)^(-3)#
Which is useful because we know
#5^(3x)=3^-3#
Using the rule
#5^(3x)=1/3^3=1/27#