What is 20% simplest form plz

Which statement most accurately describe why the division property of exponents does not apply to the expression (-8)^2/(-3)^4

Need ! give step by step solutions on how to solve number one [tex]\frac{9-2\sqrt{3} }{12+\sqrt{3} }[/tex] number two [tex]x+4=\sqrt{13x-20}[/tex] number three (domain and range) [tex]f(x)=2\sqrt[3]{x} +1[/tex]

Which value would be a solution for x in the inequality 47-4x< 7