2

 $\pm2$  

-2

None of the above 

-144, 9, 50, 75, 81, 100

9, 50, 75, 81, 100

9, 50, 81, 100

9, 81, 100

2 $\sqrt{5}$  

5 $\sqrt{2}$  

 $\sqrt{2}\sqrt{5}$  

 $\sqrt{10}\sqrt{2}$  

 $2\sqrt{3}$  

 $3\sqrt{2}$  

 $\sqrt{2}\sqrt{6}$  

 $6\sqrt{2}$  

 $5\sqrt{2}$  

 $2\sqrt{5}$  

 $5\sqrt{10}$  

 $10\sqrt{5}$  

 $3\sqrt{2}$  

 $2\sqrt{3}$  

 $9\sqrt{2}$  

 $4\sqrt{3}$  

x² button

2nd then x² button

the carrot button

2nd then carrot button

2nd then x³

2nd then x²

3, then 2nd, then ^

2nd then ^