Pls help

3x² + 3 = -132

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

Add the fractions and simplify 1/2+ 1/3

X2 + y 2 = 36 x + y = 6 solve the system of equations.