Find the limits using first principle:
1. lim (3x-1)5
x® -1


2. lim Öx-2
x®4 x-4

Find the limits algebraically:
3. lim (5x2-9x-8)
t®4

4. lim x-2
x®2 x3-8

5. lim 4-Ö16+h
h®0 h

6. lim ( x2 - 1 )
x® 1 x-1 x-1

Find each limit, if it exists.
7. lim |x-4|
x® 4- x-4

8. lim |x-4|
x® 4+ x-4

9. lim |x-4|
x® 4 x-4

10. lim 1
x® 8- x-8

11. lim 1
x® 8+ x-8

12. lim 1
x®8 x-8