Answer:

Step-by-step explanation:
Let

We factor 2 to obtain;

We factor the polynomial within the parenthesis by grouping.



We apply difference of two squares on the second factor: 

We now compare to;

It is now obvious that 
I don't understand sorry but I speak another language English
< 1 and < 2 are vertical angles...because they are opposite angles made by two intersecting lines
< 3 and < 4 are adjacent....because they have a common side and a common vertex
Answer:
2/3*(7/4)=7/6 hours
Step-by-step explanation:
Step-by-step explanation:
answer: 135 degrees for the missing side