All of the following have the same value except . 9 + (-6)
6 - 9
9 - 6
-6 - (-9)

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

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

What is the missing step in this proof ?