Simplify -3xy 3 + 7xy 3 + (-xy 3) + (-3xy 3). 0 xy3 3xy3 -xy3

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]

Measures of the angle of r, 31 s (x+4) t (3x+9)

5x−4≥12 or 12x+5≤−4 can you with this problem