Answer:
y = -1
x = -1
Step-by-step explanation:
Answer:

Step-by-step explanation:

The radical symbol when used for a square root means the non-negative square root. You cannot state that sqrt(x^2) = x because x may be negative. That is why you need use the absolute value symbol.
Answer:
I don't actually know
Step-by-step explanation:
Just ask someone
No
18/4 is 4.5
9/3 is 3
So ur answer is no