Need help with this test pls IM SORRY FOR ASKING SO MANY TIMES BUT PLS HELP

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]

Write the expression as a constant , a single trigonometric function, or a power of a trigonometric function. sin x cos x/ tan x

1. are the corresponding angles congruent 2. find the ratios of the corresponding sides 3. is triangle jkl congruent to triangle rst? if so what is the scale factor