Answer:
the answer will be B (x,y) --> (x,-y)
C both of these is correct
Huh? What do you mean I don't understand
Answer:
0 and 0
Step-by-step explanation:
The only number that can be applied to the expression without changing the sum is 0, for example 5 + 10 = 15, adding 2 0's will be 0 + 5 + 10 + 0 = 15 :D
