7. State the restrictions on /(•*)
_£_+3_ 2x h-6
S. Express

as a power of 4.
-6sJ
2xV
9.	Simplify, stating your answer using positive exponents:
l	„	{
10.	Write (16a)4 in radical form.
11.	Simplify completely:
12.	Simplify: 2V3+V27 i
3. One solution to the equation cos0 = 0.9848 is