If x+y=-1, y=-x-1
You cannot solve for y in this instance.
Answer: 
Step-by-step explanation:
We can first take out the common factor of 4, as both 4x² and -32 are divisible by 4.

From here, we can assume that x²-8 is a difference of two squares even though 8 is not a perfect square.
<em>For review, a difference of two squares </em>
can be factored into
.

The answer it b your welcome
The length of all the sides is same, if u want to write it as an expression, you can write it as any variable, x,y or z