Question 660485
{{{3^(x-x^2)=3^(-4x)}}} because {{{1/81=3^(-4)}}}
{{{x-x^2=-4x}}} Solving this quadratic equation we get:
{{{x^2-5x=0}}}
{{{x(x-5)=0}}}. The two values of x are: {0, 5}