Uh what should i say U

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I LIKE YA CUT G lolol

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

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Which expression is rational? 6. , square root two, square root 14, square root 49