Answer:
S V W and if you rotate it the W would be an M
Step-by-step explanation:
Yes it can be. (3x-7) by (3x-7) would be one solution for the square, but (7-3x) by (7-3x) would work too.
X would have to be either -(1/3) (which couldnt happen because you cant have negative lengths) so it has to be 5