Answer:
4a^2
Step-by-step explanation:

Therefore, the largest common factor is 4a^2. Hope this helps!
Step-by-step explanation:-
Let p + q = 2( p - q) be eqn.1 and pq = 675 be eqn.2
Now , lets expand eqn.1



Lets put the value of p in eqn.2




Lets find out the value of p.
When q = +15 , 
When q = -15 , 
Hence ,
p = ±45
q = ±15
There are 200 mechanics, 50 supervisors and 45 accountants. 200+50+45=295 ☺
For this case, we can model the problem as a rectangle triangle.
We know:
Height of the triangle.
Base of the triangle.
We want to know, angle between the hypotenuse and the base of the triangle.
For this, we use the following trigonometric relationship:

Clearing the angle we have:
Answer:
the angle of depression from the spotlight to the bottom of the door is:
A) 39 degrees