Answer:
a. -1
b. -1
c. 5
Step-by-step explanation:
a.
x² - 5 / x - 1
2² - 5 / 2 - 1
4 - 5 / 1
- 1 / 1
= -1
b.
x² - 5 / x - 1
-3² - 5 / -3 - 1
9 - 5 / -4
4 / -4
= - 1
c.
x² - 5 / x - 1
5² - 5 / 5 - 1
25 - 5 / 4
20 / 4
= 5
(I used the slashes as fraction bar)
