Need help if correct you get brainliest answer.

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

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]

The parabola opens: y=√x-4 (principal square root) up down right left