Answer:
Ok
Step-by-step explanation:
Answer:
i dont understand...the meaning?
Step-by-step explanation:
Answer:
So, 
Step-by-step explanation:

To evaluete this expression we apply exponential property

IF any expression has exponent 0 then the value is 1 always
for example, 

because exponent is 0
So, 
Answer:
x= -5
y= -21
Step-by-step explanation
I hope that is the answer you are looking for!And Brainiest is needed!