Answer:
NO SOLUTION
Step-by-step explanation:
[tex]81=27^{-x^{-2}}[/tex]
[tex]3^4=3^{3\left(-x^{-2}\right)}[/tex]
[tex]4=3\left(-x^{-2}\right)[/tex]
[tex]\:4=-\frac{3}{x^2}:\quad \mathrm{No\:Solution\:for}\:x\in \mathbb{R}[/tex]
