Explain why the net shown here could not be the net of a cube

A net is a two-dimensional figure that can be folded into a three-dimensional object

Step-by-step explanation:

The net shown above could not be the net of a cube because a net is a two-dimensional figure that can be folded into a three-dimensional object and if you folded the net above into a three-dimensional shape you would have a cube with a missing side, or face.  Therefore, the net above could not be a cube unless a square was added to the net above the third square to the right.

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation