Write the prodect 7 times 7 times 7 times 7 in exponential form

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]

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

What is the value of x in the following equation? -3x-2=2x+8