Answer:

Step-by-step explanation:
To evaluate :

Solution:
Two negatives multiply to become a positive.
Thus, we can remove parenthesis by reversing the signs of the fraction by multiplying the negative outside.
⇒ 
Since the denominators are same for both fractions, so we simply add the numerators.
⇒ 
⇒
(Answer)
The domain of any polynomial is
.. all real numbers.
Answer:
wut thut u better tell me -_-
Step-by-step explanation:
- 18
2- 20
= -18
Because you do the same thing just going to end up with a negative.