Question 409900
{{{25^x = 1/5}}}
{{{(5^2)^x = 5^(-1)}}}
(Review negative exponents if that last step is unclear.)
{{{5^(2x) = 5^(-1)}}}
(Review your rules for exponents when raising a power to a power if the last step is unclear.)
2x - -1
{{{x = -1/2}}}