0+0=0 0+0=0+0
They are all addition, and they are all 0, and since 0 equals nothing, the sum is equivalent to 0!
Combine like terms to get 2y2-2y+4x
The measure of BDA is 40 degrees
Answer:
Option A. is the right choice.
Step-by-step explanation:

Best Regards!
Lineare means it is in a straight line aka highest exponent on any placeholder is 1
y=2^2-4
y^1=2^2-4
yep
answer is this is linear